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| CAS No. : | 873-95-0 | 
| Formula : | C8H13NO | 
| M.W : | 139.19 | 
| SMILES Code : | NC(CC(C)(C)C1)=CC1=O | 
| MDL No. : | MFCD00045531 | 
| InChI Key : | MTZNODTZOSBYJW-UHFFFAOYSA-N | 
| Pubchem ID : | 136680 | 
| GHS Pictogram: |   | 
| Signal Word: | Warning | 
| Hazard Statements: | H302 | 
| Precautionary Statements: | P280-P305+P351+P338 | 
* All experimental methods are cited from the reference, please refer to the original source for details. We do not guarantee the accuracy of the content in the reference.

| Yield | Reaction Conditions | Operation in experiment | 
|---|---|---|
| 93% | With ammonium acetate; In acetic acid; benzene; for 1h;Reflux; | Preparation 13-Bromo-7,7-dimethyl-7,8-dihydroquinolin-5(6H)-one[00143]A mixture of 5,5-dimethylcyclohexane-1 ,3-dione (1 1 .21 g, 80 mmol), ammonium acetate (12.33 g, 160 mmol), glacial acetic acid (1 mL), and benzene (150 mL) is stirred at reflux with a Dean-Stark trap for 1 h, cooled down to r.t., poured into saturated aqueous sodium bicarbonate solution, and extracted twice with EtOAc. The combined organic phases are washed with water, dried over sodium sulfate, concentrated at reduced pressure, and dried in vacuum to give 3-amino-5,5-dimethylcyclohex-2-enone (10.37 g, 93%) as yellow solid. | 
| 90% | With ammonium acetate; In toluene; for 2h;Molecular sieve; Reflux; | A mixture of 0.28 g dimedone (2 mmol) and 0.23 g ammonium acetate (3 mmol) in 5 cm3 dry toluene in the presence of 4 A molecular sieves was refluxed for 2 h. After completion of the reaction as indicated by TLC, the reaction mixture was cooled to room temperature and the precipitate was filtered and then purified by recrystallization from dry toluene. 3-Amino-5,5-dimethyl-2-cyclohexen-1-one (3) was obtained as needles (0.25 g,90 %). M.p.: 163-165 C (Ref. [50] 163.5-164 C). | 
| 90% | With ammonium acetate; In water; at 80℃; for 5h; | A mixture of dimedone (1) (1.0 g, 7.1 mmol) and NH4OAc (1.32 g, 21.4 mmol) was heated in30 mL of water at 80 C for 5 hours. After the TLC indicated the consumption of dimedone(2), the reaction mixture was extracted with ethyl acetate several times. The combinedorganic layer was dried over sodium sulphate and evaporated to provide enaminone (2) (0.9g, 90%) as light yellow solid. | 
| 86% | With ammonium acetate; acetic acid; In toluene; for 5h;Reflux; Dean-Stark; | 3-Amino-5,5-dimethyl-2-cyclohexen-1 -one 3-Amino-5,5-dimethyl-2-cyclohexen-1 -one can be synthesized as known from literature or can be obtained by the following synthesis: A mixture of 200 g dimedone, 143 g ammonium acetate, and 5 ml acetic acid in 2 L toluene is refluxed for 5 h at a Dean-Stark trap. Then the solution is cooled to room temperature and stirred for 16 h. The suspension is filtered and the filter cake is dried at 65C. Yield: 171 g (86 % of theory) Mass spectrometry (ESI+): m/z = 140 [M+H]+ Rf-value: 0.31 (silica gel, dichloromethane/ethanol 9:1 ) | 
| 86% | With ammonium acetate; In acetic acid; toluene; at 20℃; for 21h;Reflux; Dean-Stark; | 3-Amino-5,5-dimethyl-2-cyclohexen-1-one can be synthesized as known from literature or can be obtained by the following synthesis: [0223] A mixture of 200 g dimedone, 143 g ammonium acetate, and 5 ml acetic acid in 2 L toluene is refluxed for 5 h at a Dean-Stark trap. Then the solution is cooled to room temperature and stirred for 16 h. The suspension is filtered and the filter cake is dried at 65 C. [0224] Yield: 171 g (86% of theory) [0225] Mass spectrometry (ESI+): m/z=140 [M+H]+ [0226] Rf-value: 0.31 (silica gel, dichloromethane/ethanol 9:1) | 
| 85% | With ammonium acetate; In toluene; for 5h;Reflux; | 5,5-dimethylcyclohexane-1,3-dione 10 (7.0 g,50 mmol) was added to a mixture of ammonium acetate (3.85 g, 50 mmol) in dry toluene(100 mL). The mixture was heated for 5 h under reflux using a Dean-Stark water separator.The red oily layer formed was then separated and recrystallized with ethyl acetate to afford3-amino-5,5-dimethylcyclohex-2-enone 11 (5.9 g, yield 85%) as a yellow solid. 1H-NMR (300 MHz,DMSO-d6)δ 6.67 (s, 2H), 4.90 (s, 1H), 2.11 (s, 2H), 1.90 (s, 2H), 0.96 (s, 6H). | 
| With ammonium acetate; acetic acid; In benzene; for 5h;Reflux; | The title compound was prepared in a similar manner as described by P.G. Baraldi, Synthetic Communications, 1983, 902. To a suspension of 5,5-dimethylcyclohexane-1,3-dione (10 g, 71 .3 mmol) in benzene (180 mL) were added acetic acid (1.84 mL, 31.2 mmol) and ammonium acetate (11.0 g, 143 mmol). The reaction mixture was refluxed for 5 h and the water formed was removed azeotropically using a Dean-Stark apparatus. Subsequently the reaction mixture was cooled to RT, quenched with sat. aq. Na2CO3 and iN aq. NaOH and extracted with CH2CI2 several times. The combined organic extracts were dried (Na2504), filtered and concentrated to afford the title compound. MS (UPLCMS): 139.9 [M+H]+; tR (HPLC conditions i): 0.48 mm | |
| With ammonium acetate; In toluene; for 3h;Reflux; Dean-Stark; | General procedure: 10 mmol cyclic 1,3-diketone wasadded to a mixture of 10 mmol ammonium acetate in dry toluene (20 mL). Themixture was heated for 3 h under reux using a Dean-Stark water separator. Theresulting oily product was separated and recrystallized with ethylacetate to give the corresponding enaminone as crystals. The enaminone productwas dissolved in 50ml THF and 2 equiv. of pyridine were added. To the mixedsolution, acetyl chloride (2 equiv.) in 5ml THF was added dropwise at 0 C. Thereaction mixture was warmed up to ambient temperature and stirred additional 5h at 60oC. The solvent was removed undervacuum and the crude product purified by flash chromatography | |
| With ammonium acetate; In neat (no solvent); at 90℃; for 0.5h;Green chemistry; | General procedure: The SBA-IL (0.02 g) was activated in vacuum at 100 C and then after cooling to room temperature, dimedone 7 (1.5 mmol) and ammonium acetate 8 (2.4 mmol) were added to it. In solvent-free conditions, the whole reaction mixture was heated at 90 C for 30 min. After completion of the first step and without any work-up, Meldrum’s acid 10 (1.5 mmol) and aldehyde 11a-i (1.5 mmol) were added to the reaction mixture, as reported in Table 2, at 90 C. The completion of two steps of the reaction was indicated by TLC, the resulting solid product was dissolved in hot ethanol, filtered to remove the unsolvable catalyst, and the filtrate was cooled to afford the pure product. The spectroscopic and analytical data for new compounds are presented in the following section. | |
| General procedure: A mixture of dimedone or cyclohexane-1,3-dione (1 mmol), ammonium acetate(1.5 mmol) was heated at 100 C for appropriate time. After completion of the reactionindicated by TLC (1-2 h), the reaction mixture was cooled to room temperature.By addition of a few drops of chloroform, the yellow precipitate was obtained, whichwas purified by recrystallization from n-hexane/ethyl acetate, m. p. = 157-159 Cand m. p. = 132-134 C, respectively | 

| Yield | Reaction Conditions | Operation in experiment | 
|---|---|---|
| 84% | In water; at 80℃; for 2h; | General procedure: A mixture of enaminone (2) (0.2 g, 1.4 mmol) and benzaldehyde (3a) (74 μL, 0.71 mmol)was heated in 10 mL of water at 80 C for 2 hours. The solid separated out was filtered offand dried in to provide light yellow solid (4a). | 
 [ 504-02-9 ]
                                                    
                                                    [ 504-02-9 ]
 [ 100-52-7 ]
                                                    
                                                    [ 100-52-7 ]
 [ 873-95-0 ]
                                                    
                                                    [ 873-95-0 ]
| Yield | Reaction Conditions | Operation in experiment | 
|---|---|---|
| 78% | General procedure: An ethanolic solution of desired aldehyde (1 mmol) was added dropwise to thefreshly prepared linear β-enaminone (1 mmol) dissolved in 2 mL ethanol for20 min in a 25 mL round-bottom flask in an oil bath at 100 C. Then a solutionof cyclic 1,3-dicarbonyl (1 mmol) in 2 mL of ethanol was added dropwise to thismixture for 20 min. The obtained mixture was refluxed at 100 C until the maximumprogression of reaction, determined by TLC monitoring. Then, the reactionmixture was cooled to room temperature, solvent was removed under reducedpressure and the obtained solid stuff was purified by recrystallization from n-hexane/ethyl acetate | 
 [ 504-02-9 ]
                                                    
                                                    [ 504-02-9 ]
 [ 123-11-5 ]
                                                    
                                                    [ 123-11-5 ]
 [ 873-95-0 ]
                                                    
                                                    [ 873-95-0 ]
| Yield | Reaction Conditions | Operation in experiment | 
|---|---|---|
| 73% | General procedure: An ethanolic solution of desired aldehyde (1 mmol) was added dropwise to thefreshly prepared linear β-enaminone (1 mmol) dissolved in 2 mL ethanol for20 min in a 25 mL round-bottom flask in an oil bath at 100 C. Then a solutionof cyclic 1,3-dicarbonyl (1 mmol) in 2 mL of ethanol was added dropwise to thismixture for 20 min. The obtained mixture was refluxed at 100 C until the maximumprogression of reaction, determined by TLC monitoring. Then, the reactionmixture was cooled to room temperature, solvent was removed under reducedpressure and the obtained solid stuff was purified by recrystallization from n-hexane/ethyl acetate | 
| Yield | Reaction Conditions | Operation in experiment | 
|---|---|---|
| 70% | General procedure: An ethanolic solution of desired aldehyde (1 mmol) was added dropwise to thefreshly prepared linear β-enaminone (1 mmol) dissolved in 2 mL ethanol for20 min in a 25 mL round-bottom flask in an oil bath at 100 C. Then a solutionof cyclic 1,3-dicarbonyl (1 mmol) in 2 mL of ethanol was added dropwise to thismixture for 20 min. The obtained mixture was refluxed at 100 C until the maximumprogression of reaction, determined by TLC monitoring. Then, the reactionmixture was cooled to room temperature, solvent was removed under reducedpressure and the obtained solid stuff was purified by recrystallization from n-hexane/ethyl acetate | 
| Yield | Reaction Conditions | Operation in experiment | 
|---|---|---|
| 70% | General procedure: An ethanolic solution of desired aldehyde (1 mmol) was added dropwise to thefreshly prepared linear β-enaminone (1 mmol) dissolved in 2 mL ethanol for20 min in a 25 mL round-bottom flask in an oil bath at 100 C. Then a solutionof cyclic 1,3-dicarbonyl (1 mmol) in 2 mL of ethanol was added dropwise to thismixture for 20 min. The obtained mixture was refluxed at 100 C until the maximumprogression of reaction, determined by TLC monitoring. Then, the reactionmixture was cooled to room temperature, solvent was removed under reducedpressure and the obtained solid stuff was purified by recrystallization from n-hexane/ethyl acetate | 
 [ 53931-59-2 ]
                                                    
                                                    [ 53931-59-2 ]
 [ 873-95-0 ]
                                                    
                                                    [ 873-95-0 ]
| Yield | Reaction Conditions | Operation in experiment | 
|---|---|---|
| 45% | 7,7-Dimethyl-2-phenethyl-7,8-dihydro-6H-quinolin-5-one hydrochloride A mixture of 4 A molecular sieves (140 mg), 5-phenylpent-1-en-3-one (Martin, R.; Romea, P.; Tey, C.; Urpi, F.; Vilarrasa, J.; SynLett. 1997, (12) 1414-1416.) (0.22 g, 1.4 mmol), <strong>[873-95-0]3-amino-5,5-dimethylcyclohex-2-en-1-one</strong>, and 10% Pd/C (14 mg) in toluene (4 ml) was heated at reflux for 4.5 h. It was filtered and the filtrate was evaporated under reduced pressure. The residue was purified by flash chromatography on silica gel (chloroform-methanol, 30:1), then it was treated by a dry HCl solution in diethyl ether to give the title compound (0.2 g, 45%) as a colorless solid. Physical characteristics are as follows Mp 173-175 C.; 1H NMR (CDCl3, TMS) δ: 1.18, 2.63, 3.24, 3.62, 3.70, 7.15-7.30, 7.37, and 8.61; Anal. Found (C19H21NO*HCl) (%): C, 71.6; H, 7.0; N, 4.4. | 
 [ 873-95-0 ]
                                                    
                                                    [ 873-95-0 ]
 [ 6630-33-7 ]
                                                    
                                                    [ 6630-33-7 ]
| Yield | Reaction Conditions | Operation in experiment | 
|---|---|---|
| 71% | In water; at 80℃; for 2h; | General procedure: A mixture of enaminone (2) (0.2 g, 1.4 mmol) and benzaldehyde (3a) (74 μL, 0.71 mmol)was heated in 10 mL of water at 80 C for 2 hours. The solid separated out was filtered offand dried in to provide light yellow solid (4a). | 
| EXAMPLE 43 3-Amino-5,5-dimethyl-2-cyclohexen-1-one was reacted with 2-bromobenzaldehyde in an analogous manner to that described in Example 1 to give 9-(2-bromophenyl)-3,4,6,7,9,10-hexahydro-3,3,6,6-tetramethyl-1,8(2H,5H)-acridinedione. Crystallization from dimethylformamide/water gave a yellow powder of melting point >285 C. (decomposition). | 
| Yield | Reaction Conditions | Operation in experiment | 
|---|---|---|
| 74% | With ammonium acetate; In butan-1-ol; at 120℃; for 12h; | General procedure: Aldehyde 1 (0.5 mmol), 3-cynaoacetyl indole 2 (0.5 mmol), and 3-amino-2-enone 3 (0.5 mmol) at 120 C was stirred for 8 h or 12 h in 2 mL n-BuOH in the presence of NH4OAc (0.5 mmol). After the completion (monitored by TLC), water (50 mL) was added. The mixture was filtered and the solid product was washed with water (3×5 mL). The crude product was purified by recrystallization from EtOH to give 4. | 

 [ 104-87-0 ]
                                                    
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 [ 873-95-0 ]
                                                    
                                                    [ 873-95-0 ]
 [ 1315506-01-4 ]
                                                    
                                                    [ 1315506-01-4 ]| Yield | Reaction Conditions | Operation in experiment | 
|---|---|---|
| 73% | With ammonium acetate; In butan-1-ol; at 120℃; for 12h; | General procedure: Aldehyde 1 (0.5 mmol), 3-cynaoacetyl indole 2 (0.5 mmol), and 3-amino-2-enone 3 (0.5 mmol) at 120 C was stirred for 8 h or 12 h in 2 mL n-BuOH in the presence of NH4OAc (0.5 mmol). After the completion (monitored by TLC), water (50 mL) was added. The mixture was filtered and the solid product was washed with water (3×5 mL). The crude product was purified by recrystallization from EtOH to give 4. | 

 [ 555-16-8 ]
                                                    
                                                    [ 555-16-8 ]
 [ 873-95-0 ]
                                                    
                                                    [ 873-95-0 ]
 [ 1315505-83-9 ]
                                                    
                                                    [ 1315505-83-9 ]| Yield | Reaction Conditions | Operation in experiment | 
|---|---|---|
| 79% | With ammonium acetate; In butan-1-ol; at 120℃; for 8h; | General procedure: Aldehyde 1 (0.5 mmol), 3-cynaoacetyl indole 2 (0.5 mmol), and 3-amino-2-enone 3 (0.5 mmol) at 120 C was stirred for 8 h or 12 h in 2 mL n-BuOH in the presence of NH4OAc (0.5 mmol). After the completion (monitored by TLC), water (50 mL) was added. The mixture was filtered and the solid product was washed with water (3×5 mL). The crude product was purified by recrystallization from EtOH to give 4. | 

 [ 100-52-7 ]
                                                    
                                                    [ 100-52-7 ]
 [ 873-95-0 ]
                                                    
                                                    [ 873-95-0 ]
 [ 1315505-94-2 ]
                                                    
                                                    [ 1315505-94-2 ]| Yield | Reaction Conditions | Operation in experiment | 
|---|---|---|
| 79% | With ammonium acetate; In butan-1-ol; at 120℃; for 12h; | General procedure: Aldehyde 1 (0.5 mmol), 3-cynaoacetyl indole 2 (0.5 mmol), and 3-amino-2-enone 3 (0.5 mmol) at 120 C was stirred for 8 h or 12 h in 2 mL n-BuOH in the presence of NH4OAc (0.5 mmol). After the completion (monitored by TLC), water (50 mL) was added. The mixture was filtered and the solid product was washed with water (3×5 mL). The crude product was purified by recrystallization from EtOH to give 4. | 

 [ 123-11-5 ]
                                                    
                                                    [ 123-11-5 ]
 [ 873-95-0 ]
                                                    
                                                    [ 873-95-0 ]
 [ 1315506-05-8 ]
                                                    
                                                    [ 1315506-05-8 ]| Yield | Reaction Conditions | Operation in experiment | 
|---|---|---|
| 71% | With ammonium acetate; In butan-1-ol; at 120℃; for 12h; | General procedure: Aldehyde 1 (0.5 mmol), 3-cynaoacetyl indole 2 (0.5 mmol), and 3-amino-2-enone 3 (0.5 mmol) at 120 C was stirred for 8 h or 12 h in 2 mL n-BuOH in the presence of NH4OAc (0.5 mmol). After the completion (monitored by TLC), water (50 mL) was added. The mixture was filtered and the solid product was washed with water (3×5 mL). The crude product was purified by recrystallization from EtOH to give 4. | 

 [ 873-95-0 ]
                                                    
                                                    [ 873-95-0 ]
 [ 1122-91-4 ]
                                                    
                                                    [ 1122-91-4 ]
 [ 1315505-79-3 ]
                                                    
                                                    [ 1315505-79-3 ]| Yield | Reaction Conditions | Operation in experiment | 
|---|---|---|
| 84% | With ammonium acetate; In butan-1-ol; at 120℃; for 8h; | General procedure: Aldehyde 1 (0.5 mmol), 3-cynaoacetyl indole 2 (0.5 mmol), and 3-amino-2-enone 3 (0.5 mmol) at 120 C was stirred for 8 h or 12 h in 2 mL n-BuOH in the presence of NH4OAc (0.5 mmol). After the completion (monitored by TLC), water (50 mL) was added. The mixture was filtered and the solid product was washed with water (3×5 mL). The crude product was purified by recrystallization from EtOH to give 4. | 

 [ 873-95-0 ]
                                                    
                                                    [ 873-95-0 ]
 [ 135-02-4 ]
                                                    
                                                    [ 135-02-4 ]
 [ 1315505-98-6 ]
                                                    
                                                    [ 1315505-98-6 ]| Yield | Reaction Conditions | Operation in experiment | 
|---|---|---|
| 78% | With ammonium acetate; In butan-1-ol; at 120℃; for 12h; | General procedure: Aldehyde 1 (0.5 mmol), 3-cynaoacetyl indole 2 (0.5 mmol), and 3-amino-2-enone 3 (0.5 mmol) at 120 C was stirred for 8 h or 12 h in 2 mL n-BuOH in the presence of NH4OAc (0.5 mmol). After the completion (monitored by TLC), water (50 mL) was added. The mixture was filtered and the solid product was washed with water (3×5 mL). The crude product was purified by recrystallization from EtOH to give 4. | 
| Yield | Reaction Conditions | Operation in experiment | 
|---|---|---|
| 75% | With ammonium acetate; In butan-1-ol; at 120℃; for 8h; | General procedure: Aldehyde 1 (0.5 mmol), 3-cynaoacetyl indole 2 (0.5 mmol), and 3-amino-2-enone 3 (0.5 mmol) at 120 C was stirred for 8 h or 12 h in 2 mL n-BuOH in the presence of NH4OAc (0.5 mmol). After the completion (monitored by TLC), water (50 mL) was added. The mixture was filtered and the solid product was washed with water (3×5 mL). The crude product was purified by recrystallization from EtOH to give 4. | 
| Yield | Reaction Conditions | Operation in experiment | 
|---|---|---|
| 77% | With ammonium acetate; In butan-1-ol; at 120℃; for 12h; | General procedure: Aldehyde 1 (0.5 mmol), 3-cynaoacetyl indole 2 (0.5 mmol), and 3-amino-2-enone 3 (0.5 mmol) at 120 C was stirred for 8 h or 12 h in 2 mL n-BuOH in the presence of NH4OAc (0.5 mmol). After the completion (monitored by TLC), water (50 mL) was added. The mixture was filtered and the solid product was washed with water (3×5 mL). The crude product was purified by recrystallization from EtOH to give 4. | 
| Yield | Reaction Conditions | Operation in experiment | 
|---|---|---|
| 70% | With ammonium acetate; In butan-1-ol; at 120℃; for 12h; | General procedure: Aldehyde 1 (0.5 mmol), 3-cynaoacetyl indole 2 (0.5 mmol), and 3-amino-2-enone 3 (0.5 mmol) at 120 C was stirred for 8 h or 12 h in 2 mL n-BuOH in the presence of NH4OAc (0.5 mmol). After the completion (monitored by TLC), water (50 mL) was added. The mixture was filtered and the solid product was washed with water (3×5 mL). The crude product was purified by recrystallization from EtOH to give 4. | 
| Yield | Reaction Conditions | Operation in experiment | 
|---|---|---|
| 85% | With ammonium acetate; In butan-1-ol; at 120℃; for 8h; | General procedure: Aldehyde 1 (0.5 mmol), 3-cynaoacetyl indole 2 (0.5 mmol), and 3-amino-2-enone 3 (0.5 mmol) at 120 C was stirred for 8 h or 12 h in 2 mL n-BuOH in the presence of NH4OAc (0.5 mmol). After the completion (monitored by TLC), water (50 mL) was added. The mixture was filtered and the solid product was washed with water (3×5 mL). The crude product was purified by recrystallization from EtOH to give 4. | 
| Yield | Reaction Conditions | Operation in experiment | 
|---|---|---|
| 82% | With ammonium acetate; In butan-1-ol; at 120℃; for 8h; | General procedure: Aldehyde 1 (0.5 mmol), 3-cynaoacetyl indole 2 (0.5 mmol), and 3-amino-2-enone 3 (0.5 mmol) at 120 C was stirred for 8 h or 12 h in 2 mL n-BuOH in the presence of NH4OAc (0.5 mmol). After the completion (monitored by TLC), water (50 mL) was added. The mixture was filtered and the solid product was washed with water (3×5 mL). The crude product was purified by recrystallization from EtOH to give 4. | 
| Yield | Reaction Conditions | Operation in experiment | 
|---|---|---|
| 76% | With ammonium acetate; In butan-1-ol; at 120℃; for 12h; | General procedure: Aldehyde 1 (0.5 mmol), 3-cynaoacetyl indole 2 (0.5 mmol), and 3-amino-2-enone 3 (0.5 mmol) at 120 C was stirred for 8 h or 12 h in 2 mL n-BuOH in the presence of NH4OAc (0.5 mmol). After the completion (monitored by TLC), water (50 mL) was added. The mixture was filtered and the solid product was washed with water (3×5 mL). The crude product was purified by recrystallization from EtOH to give 4. | 
| Yield | Reaction Conditions | Operation in experiment | 
|---|---|---|
| 89% | With ammonium acetate; In butan-1-ol; at 120℃; for 8h; | General procedure: Aldehyde 1 (0.5 mmol), 3-cynaoacetyl indole 2 (0.5 mmol), and 3-amino-2-enone 3 (0.5 mmol) at 120 C was stirred for 8 h or 12 h in 2 mL n-BuOH in the presence of NH4OAc (0.5 mmol). After the completion (monitored by TLC), water (50 mL) was added. The mixture was filtered and the solid product was washed with water (3×5 mL). The crude product was purified by recrystallization from EtOH to give 4. | 
| Yield | Reaction Conditions | Operation in experiment | 
|---|---|---|
| 88% | With ammonium acetate; In butan-1-ol; at 120℃; for 8h; | General procedure: Aldehyde 1 (0.5 mmol), 3-cynaoacetyl indole 2 (0.5 mmol), and 3-amino-2-enone 3 (0.5 mmol) at 120 C was stirred for 8 h or 12 h in 2 mL n-BuOH in the presence of NH4OAc (0.5 mmol). After the completion (monitored by TLC), water (50 mL) was added. The mixture was filtered and the solid product was washed with water (3×5 mL). The crude product was purified by recrystallization from EtOH to give 4. | 
| Yield | Reaction Conditions | Operation in experiment | 
|---|---|---|
| 81% | With ammonium acetate; In butan-1-ol; at 120℃; for 12h; | General procedure: Aldehyde 1 (0.5 mmol), 3-cynaoacetyl indole 2 (0.5 mmol), and 3-amino-2-enone 3 (0.5 mmol) at 120 C was stirred for 8 h or 12 h in 2 mL n-BuOH in the presence of NH4OAc (0.5 mmol). After the completion (monitored by TLC), water (50 mL) was added. The mixture was filtered and the solid product was washed with water (3×5 mL). The crude product was purified by recrystallization from EtOH to give 4. | 
| Yield | Reaction Conditions | Operation in experiment | 
|---|---|---|
| 77% | With ammonium acetate; In butan-1-ol; at 120℃; for 12h; | General procedure: Aldehyde 1 (0.5 mmol), 3-cynaoacetyl indole 2 (0.5 mmol), and 3-amino-2-enone 3 (0.5 mmol) at 120 C was stirred for 8 h or 12 h in 2 mL n-BuOH in the presence of NH4OAc (0.5 mmol). After the completion (monitored by TLC), water (50 mL) was added. The mixture was filtered and the solid product was washed with water (3×5 mL). The crude product was purified by recrystallization from EtOH to give 4. | 
| Yield | Reaction Conditions | Operation in experiment | 
|---|---|---|
| 80% | With ammonium acetate; In butan-1-ol; at 120℃; for 8h; | General procedure: Aldehyde 1 (0.5 mmol), 3-cynaoacetyl indole 2 (0.5 mmol), and 3-amino-2-enone 3 (0.5 mmol) at 120 C was stirred for 8 h or 12 h in 2 mL n-BuOH in the presence of NH4OAc (0.5 mmol). After the completion (monitored by TLC), water (50 mL) was added. The mixture was filtered and the solid product was washed with water (3×5 mL). The crude product was purified by recrystallization from EtOH to give 4. | 
| Yield | Reaction Conditions | Operation in experiment | 
|---|---|---|
| 77% | With ammonium acetate; In butan-1-ol; at 120℃; for 8h; | General procedure: Aldehyde 1 (0.5 mmol), 3-cynaoacetyl indole 2 (0.5 mmol), and 3-amino-2-enone 3 (0.5 mmol) at 120 C was stirred for 8 h or 12 h in 2 mL n-BuOH in the presence of NH4OAc (0.5 mmol). After the completion (monitored by TLC), water (50 mL) was added. The mixture was filtered and the solid product was washed with water (3×5 mL). The crude product was purified by recrystallization from EtOH to give 4. | 
| Yield | Reaction Conditions | Operation in experiment | 
|---|---|---|
| 83% | With ammonium acetate; In butan-1-ol; at 120℃; for 12h; | General procedure: Aldehyde 1 (0.5 mmol), 3-cynaoacetyl indole 2 (0.5 mmol), and 3-amino-2-enone 3 (0.5 mmol) at 120 C was stirred for 8 h or 12 h in 2 mL n-BuOH in the presence of NH4OAc (0.5 mmol). After the completion (monitored by TLC), water (50 mL) was added. The mixture was filtered and the solid product was washed with water (3×5 mL). The crude product was purified by recrystallization from EtOH to give 4. | 
| Yield | Reaction Conditions | Operation in experiment | 
|---|---|---|
| 81% | With ammonium acetate; In butan-1-ol; at 120℃; for 12h; | General procedure: Aldehyde 1 (0.5 mmol), 3-cynaoacetyl indole 2 (0.5 mmol), and 3-amino-2-enone 3 (0.5 mmol) at 120 C was stirred for 8 h or 12 h in 2 mL n-BuOH in the presence of NH4OAc (0.5 mmol). After the completion (monitored by TLC), water (50 mL) was added. The mixture was filtered and the solid product was washed with water (3×5 mL). The crude product was purified by recrystallization from EtOH to give 4. | 
| Yield | Reaction Conditions | Operation in experiment | 
|---|---|---|
| 75% | With ammonium acetate; In butan-1-ol; at 120℃; for 12h; | General procedure: Aldehyde 1 (0.5 mmol), 3-cynaoacetyl indole 2 (0.5 mmol), and 3-amino-2-enone 3 (0.5 mmol) at 120 C was stirred for 8 h or 12 h in 2 mL n-BuOH in the presence of NH4OAc (0.5 mmol). After the completion (monitored by TLC), water (50 mL) was added. The mixture was filtered and the solid product was washed with water (3×5 mL). The crude product was purified by recrystallization from EtOH to give 4. | 
| Yield | Reaction Conditions | Operation in experiment | 
|---|---|---|
| 72% | With ammonium acetate; In butan-1-ol; at 120℃; for 12h; | General procedure: Aldehyde 1 (0.5 mmol), 3-cynaoacetyl indole 2 (0.5 mmol), and 3-amino-2-enone 3 (0.5 mmol) at 120 C was stirred for 8 h or 12 h in 2 mL n-BuOH in the presence of NH4OAc (0.5 mmol). After the completion (monitored by TLC), water (50 mL) was added. The mixture was filtered and the solid product was washed with water (3×5 mL). The crude product was purified by recrystallization from EtOH to give 4. | 
| Yield | Reaction Conditions | Operation in experiment | 
|---|---|---|
| 93% | With ammonium acetate; In butan-1-ol; at 120℃; for 8h; | General procedure: Aldehyde 1 (0.5 mmol), 3-cynaoacetyl indole 2 (0.5 mmol), and 3-amino-2-enone 3 (0.5 mmol) at 120 C was stirred for 8 h or 12 h in 2 mL n-BuOH in the presence of NH4OAc (0.5 mmol). After the completion (monitored by TLC), water (50 mL) was added. The mixture was filtered and the solid product was washed with water (3×5 mL). The crude product was purified by recrystallization from EtOH to give 4. | 
| Yield | Reaction Conditions | Operation in experiment | 
|---|---|---|
| 90% | With ammonium acetate; In butan-1-ol; at 120℃; for 8h; | General procedure: Aldehyde 1 (0.5 mmol), 3-cynaoacetyl indole 2 (0.5 mmol), and 3-amino-2-enone 3 (0.5 mmol) at 120 C was stirred for 8 h or 12 h in 2 mL n-BuOH in the presence of NH4OAc (0.5 mmol). After the completion (monitored by TLC), water (50 mL) was added. The mixture was filtered and the solid product was washed with water (3×5 mL). The crude product was purified by recrystallization from EtOH to give 4. | 
| Yield | Reaction Conditions | Operation in experiment | 
|---|---|---|
| 90% | With ammonium acetate; In butan-1-ol; at 120℃; for 8h; | General procedure: Aldehyde 1 (0.5 mmol), 3-cynaoacetyl indole 2 (0.5 mmol), and 3-amino-2-enone 3 (0.5 mmol) at 120 C was stirred for 8 h or 12 h in 2 mL n-BuOH in the presence of NH4OAc (0.5 mmol). After the completion (monitored by TLC), water (50 mL) was added. The mixture was filtered and the solid product was washed with water (3×5 mL). The crude product was purified by recrystallization from EtOH to give 4. | 
| Yield | Reaction Conditions | Operation in experiment | 
|---|---|---|
| 66% | With ammonium acetate; In butan-1-ol; at 120℃; for 12h; | General procedure: Aldehyde 1 (0.5 mmol), 3-cynaoacetyl indole 2 (0.5 mmol), and 3-amino-2-enone 3 (0.5 mmol) at 120 C was stirred for 8 h or 12 h in 2 mL n-BuOH in the presence of NH4OAc (0.5 mmol). After the completion (monitored by TLC), water (50 mL) was added. The mixture was filtered and the solid product was washed with water (3×5 mL). The crude product was purified by recrystallization from EtOH to give 4. | 
| Yield | Reaction Conditions | Operation in experiment | 
|---|---|---|
| 80% | With ammonium acetate; In butan-1-ol; at 120℃; for 12h; | General procedure: Aldehyde 1 (0.5 mmol), 3-cynaoacetyl indole 2 (0.5 mmol), and 3-amino-2-enone 3 (0.5 mmol) at 120 C was stirred for 8 h or 12 h in 2 mL n-BuOH in the presence of NH4OAc (0.5 mmol). After the completion (monitored by TLC), water (50 mL) was added. The mixture was filtered and the solid product was washed with water (3×5 mL). The crude product was purified by recrystallization from EtOH to give 4. | 
| Yield | Reaction Conditions | Operation in experiment | 
|---|---|---|
| 87% | With ammonium acetate; In butan-1-ol; at 120℃; for 8h; | General procedure: Aldehyde 1 (0.5 mmol), 3-cynaoacetyl indole 2 (0.5 mmol), and 3-amino-2-enone 3 (0.5 mmol) at 120 C was stirred for 8 h or 12 h in 2 mL n-BuOH in the presence of NH4OAc (0.5 mmol). After the completion (monitored by TLC), water (50 mL) was added. The mixture was filtered and the solid product was washed with water (3×5 mL). The crude product was purified by recrystallization from EtOH to give 4. | 
| Yield | Reaction Conditions | Operation in experiment | 
|---|---|---|
| 61% | With ammonium acetate; In butan-1-ol; at 120℃; for 12h; | General procedure: Aldehyde 1 (0.5 mmol), 3-cynaoacetyl indole 2 (0.5 mmol), and 3-amino-2-enone 3 (0.5 mmol) at 120 C was stirred for 8 h or 12 h in 2 mL n-BuOH in the presence of NH4OAc (0.5 mmol). After the completion (monitored by TLC), water (50 mL) was added. The mixture was filtered and the solid product was washed with water (3×5 mL). The crude product was purified by recrystallization from EtOH to give 4. | 
| Yield | Reaction Conditions | Operation in experiment | 
|---|---|---|
| 79% | With ammonium acetate; In butan-1-ol; at 120℃; for 12h; | General procedure: Aldehyde 1 (0.5 mmol), 3-cynaoacetyl indole 2 (0.5 mmol), and 3-amino-2-enone 3 (0.5 mmol) at 120 C was stirred for 8 h or 12 h in 2 mL n-BuOH in the presence of NH4OAc (0.5 mmol). After the completion (monitored by TLC), water (50 mL) was added. The mixture was filtered and the solid product was washed with water (3×5 mL). The crude product was purified by recrystallization from EtOH to give 4. | 
| Yield | Reaction Conditions | Operation in experiment | 
|---|---|---|
| 54% | With sulfolane; at 150℃; for 5h; | Ethyl 2,4-dihydroxy-7,7-dimethyl-5-oxo-5,6,7,8-tetrahydroquinoline-3-carboxylate 150 g 3-amino-5,5-dimethyl-2-cyclohexen-1 -one and 250 ml 2-ethoxycarbonyl-malonic acid diethyl ester in 100 ml sulfolane are heated to 150 C. Volatiles are continuously distilled of at 100 mbar. After 5 h the reaction mixture is cooled to 100 C and treated with 70 ml dioxane. Then the reaction mixture is cooled to 50 C and treated with 500 ml methyl tert-butyl ether. The mixture is stirred at room temperature for 15 h and then the precipitate is collected by filtration and dried at 70 C. Yield: 163 g (54 % of theory) Mass spectrometry (ESI+): m/z = 280 [M+H]+ Rf-value: 0.24 (silica gel, dichloromethane/methanol 20:1 ) | 
| 54% | In sulfolane; at 150℃; under 75.0075 Torr; for 5h; | 150 g <strong>[873-95-0]3-amino-5,5-dimethyl-2-cyclohexen-1-one</strong> and 250 ml 2-ethoxycarbonyl-malonic acid diethyl ester in 100 ml sulfolane are heated to 150 C. Volatiles are continuously distilled of at 100 mbar. After 5 h the reaction mixture is cooled to 100 C. and treated with 70 ml dioxane. Then the reaction mixture is cooled to 50 C. and treated with 500 ml methyl tert-butyl ether. The mixture is stirred at room temperature for 15 h and then the precipitate is collected by filtration and dried at 70 C. [0229] Yield: 163 g (54% of theory) [0230] Mass spectrometry (ESI+): m/z=280 [M+H]+ [0231] Rf-value: 0.24 (silica gel, dichloromethane/methanol 20:1) | 
| 49% | at 210℃; for 0.166667h; | Example IEthyl 2,4-dihvdroxy-7,7-dimethyl-5-oxo-5,6,7,8-tetrahvdroquinoline-3-carboxylate10 g 3-Amino-5,5-dimethyl-2-cyclohexen-1 -one and 25 g 2-Ethoxycarbonyl-malonic acid diethyl ester are combined and heated for 10 minutes at 210C (bath temperature).Thereafter the mixture is cooled to room temperature and triturated with diethylether. The crystalline precipitate is collected by filtration and dried in vacuo.Yield: 9,9 g (49 % of theory)Mass spectrometry (ESI+): m/z = 280 [M+H]+ Rf-value: 0,45 (silica gel, dichloromethane/methanol 9:1 ) | 
| 49% | at 210℃; for 0.166667h; | 10 g 3-Amino-5,5-dimethyl-2-cyclohexen-1-one and 25 g 2-Ethoxycarbonyl-malonic acid diethyl ester are combined and heated for 10 minutes at 210 C. (bath temperature). Thereafter the mixture is cooled to room temperature and triturated with diethylether. The crystalline precipitate is collected by filtration and dried in vacuo.Yield: 9.9 g (49% of theory)Mass spectrometry (ESI+): m/z=280 [M+H]+ Rf-value: 0.45 (silica gel, dichloromethane/methanol 9:1) | 
| 49% | at 210℃; for 0.166667h; | Example IEthyl 2,4-dihvdroxy-7,7-dimethyl-5-oxo-5,6,7,8-tetrahvdroquinoline-3-carboxylate10 g 3-Amino-5,5-dimethyl-2-cyclohexen-1-one and 25 g 2-Ethoxycarbonyl-malonic acid diethyl ester are combined and heated for 10 minutes at 210C (bath temperature).Thereafter the mixture is cooled to room temperature and triturated with diethylether. The crystalline precipitate is collected by filtration and dried in vacuo.Yield: 9,9 g (49 % of theory)Mass spectrometry (ESI+): m/z = 280 [M+H]+ Rf-value: 0,45 (silica gel, dichloromethane/methanol 9: 1) | 
| 49% | for 0.166667h;Heating; | 10 g 3-Amino-5,5-dimethyl-2-cyclohexen-1-one and 25 g 2-Ethoxycarbonyl-malonic acid diethyl ester are combined and heated for 10 minutes at 210 C. (bath temperature). Thereafter the mixture is cooled to room temperature and triturated with diethylether. The crystalline precipitate is collected by filtration and dried in vacuo.[0523]Yield: 9.9 g (49% of theory)[0524]Mass spectrometry (ESI+): m/z=280 [M+H]+[0525]Rf-value: 0.45 (silica gel, dichloromethane/methanol 9:1) | 

| Yield | Reaction Conditions | Operation in experiment | 
|---|---|---|
| 53% | 3.12 g 3-Isobutyryl-1,8-dioxaspiro[4.5]dec-3-en-2-one and 2.13 g <strong>[873-95-0]3-amino-5,5-dimethylcyclohex-2-enone</strong> are mixed and heated to 200 C. for 10 minutes under a vacuo of 20 mbar. The mixture is cooled to room temperature, 15 ml ethylacetate are added and the mixture is stirred for 30 minutes. Then 15 ml petrole ether are added and the precipitate is isolated by filtration. The crude product is dissolved in 350 ml dichloromethane, treated with 2.46 g 2,3dichloro-5,6-dicyano-p-benzoquinone and stirred for 18 hours. 2 g Ascorbic acid are added and the mixture is stirred for 10 minutes. The it is washed for three times with water. The organic phase is dried with sodium sulphate and the solvents are evaporated in vacuo. The residue is chromatographed on silica gel (petrole ether/ethylacetate 100:0 to 50:50).Yield: 2.55 g (53% of theory)Mass spectrometry (ESI+): m/z=344 [M+H]+ HPLC (Method 5): Retention time=1.546 min. | 
| Yield | Reaction Conditions | Operation in experiment | 
|---|---|---|
| 63% | 10 g Ethyl 2-oxo-1,8-dioxaspiro[4.5]dec-3-ene-3-carboxylate and 6.15 g <strong>[873-95-0]3-amino-5,5-dimethylcyclohex-2-enone</strong> are mixed and heated to 200 C. for 20 minutes under a vacuo of 20 mbar. The mixture is cooled to room temperature and dissolved in 100 ml ethylacetate. 10 g 2,3-dichloro-5,6-dicyano-p-benzoquinone are added and the mixture is stirred for 4 hours at 50 C. and for 18 hours at room temperature. The product is isolated by filtration and washed with ethylacetate.Yield: 8.9 g (63% of theory)Mass spectrometry (ESL): m/z=318 [M+H]+ HPLC (Method 28): Retention time=0.776 min. | 
| Yield | Reaction Conditions | Operation in experiment | 
|---|---|---|
| 93% | With hydrogen bromide; In ethanol; water; at 20℃; for 0.0833333h; | To a solution of <strong>[873-95-0]3-amino-5,5-dimethylcyclohex-2-enone</strong> (2.78 g, 20.00 mmol) in EtOH (50 mL) 46% aqueous solution of HBr (2.40 mL, 20.00 mmol) is added. The resulting solution is stirred at ambient temperature for 5 min and concentrated at reduced pressure. The obtained solid is dissolved in a mixture of acetonitrile/benzene, concentrated at reduced pressure, washed with dry acetonitrile and dried to yield 3- amino-5,5-dimethylcyclohex-2-enone hydrobromide (4.08 g, 93%) as white solid. | 
| Yield | Reaction Conditions | Operation in experiment | 
|---|---|---|
| 35% | General procedure; To a 250 mL single neck flask equipped with a ST "Y" tube, condenser and a pressure equalizing dropping funnel containing 85 mL of anhydrous THF, was cautiously added NaH (0.84 g, 35.0 mmol) with constant stirring, maintaining the temperature below 20 C with external cooling. After the reaction, 14b (1.9 g, 15.0 mmol) was added over 30 min through the "Y" tube, and after the addition, a further 10 mL of THF washed the "Y" tube. The reaction mixture was heated to reflux for 20 min, cooled to room temperature and 5-methylisoxazolyl carbonylchloride [7] (2.30 g, 16.0 mmol) in anhydrous THF (25 mL) was added dropwise over 5 min. After stirring at room temperature for a further 10 min, the mixture was quenched with water and transferred to a 250 mL Erlenmeyer flask, neutralized with concentrated HCl (∼10 mL), diluted with dichloromethane (55 mL) and transferred to a separatory funnel. The aqueous layer was discarded and the organic layer was washed successively with water (55 mL), 10% NaHCO3 (2 × 55 mL), and water (55 mL). The organic layer was dried over sodium sulfate, evaporated in vacuo and the residue triturated with anhydrous Et2O (110 mL). The crude solid was recrystallized from EtOAc, to give 15b (0.75 g 21%) as cream colored crystals. | 
| Yield | Reaction Conditions | Operation in experiment | 
|---|---|---|
| 85% | With SBA-15/SO3H; In neat (no solvent); at 60℃; for 0.5h;Green chemistry; | General procedure: In this work SBA-15 nanoreactor was synthesized by the procedure reported by Zhao et al. [6a] and then modified with mercaptopropyltrimethoxysilane (MPTMS) and oxidized to the sulfonic acid [6b] nanoparticle using hydrogen peroxide (Fig. 1). A mixture of diketene (3 mmol), aldehyde (1 mmol), enamine (1 mmol) and alcohol (4 mL) and SBA-15/SO3H (0.07 g, ~4 mol%) was reacted under neat conditions for appropriate time (TLC). After that, 20 mL hot EtOH was added to the reaction vessel and, with simple centrifuging, the catalyst was removed as filtrate, washed and then the product recrystallized from hot ethanol. All of the products are synthesized by four-component method and were identified by their physical and spectral data (mp, IR, 1H NMR and 13C NMR). | 
 [ 674-82-8 ]
                                                    
                                                    [ 674-82-8 ]
 [ 67-56-1 ]
                                                    
                                                    [ 67-56-1 ]
 [ 89-98-5 ]
                                                    
                                                    [ 89-98-5 ]
 [ 873-95-0 ]
                                                    
                                                    [ 873-95-0 ]
| Yield | Reaction Conditions | Operation in experiment | 
|---|---|---|
| 85% | With SBA-15/SO3H; In neat (no solvent); at 60℃; for 0.416667h;Green chemistry; | General procedure: In this work SBA-15 nanoreactor was synthesized by the procedure reported by Zhao et al. [6a] and then modified with mercaptopropyltrimethoxysilane (MPTMS) and oxidized to the sulfonic acid [6b] nanoparticle using hydrogen peroxide (Fig. 1). A mixture of diketene (3 mmol), aldehyde (1 mmol), enamine (1 mmol) and alcohol (4 mL) and SBA-15/SO3H (0.07 g, ~4 mol%) was reacted under neat conditions for appropriate time (TLC). After that, 20 mL hot EtOH was added to the reaction vessel and, with simple centrifuging, the catalyst was removed as filtrate, washed and then the product recrystallized from hot ethanol. All of the products are synthesized by four-component method and were identified by their physical and spectral data (mp, IR, 1H NMR and 13C NMR). Methyl 4-(2-chlorophenyl)-2,7,7-trimethyl-5-oxo-1,4,5,6,7,8-hexahydro-3-quinolinecarboxylate (3d, Table 1). IR (KBr, cm-1): vmax 3289, 2951, 1707, 1654, 1608, 1490, 1222, 1080, 1034, 827, 773, 540. 1H NMR (300 MHz, CDCl3): δ 0.91 (s, 3H), 1.07 (s, 3 H), 2.04-2.36 (m, 7 H), 3.57 (s, 3 H), 5.38 (s, 1 H), 6.81 (s, 1 H), 7.00-7.34 (m, 4 H). 13C NMR (75 MHz, CDCl3): δ 19.19, 27.15, 29.37, 32.54, 35.61, 40.96, 50.62, 50.83, 105.17, 111.37, 126.42, 127.26, 129.61, 131.64, 131.64, 133.10, 143.87, 144.33, 148.92, 167.91, 195.51. | 
 [ 674-82-8 ]
                                                    
                                                    [ 674-82-8 ]
 [ 64-17-5 ]
                                                    
                                                    [ 64-17-5 ]
 [ 123-11-5 ]
                                                    
                                                    [ 123-11-5 ]
 [ 873-95-0 ]
                                                    
                                                    [ 873-95-0 ]
| Yield | Reaction Conditions | Operation in experiment | 
|---|---|---|
| 90% | With SBA-15/SO3H; In neat (no solvent); at 60℃; for 0.333333h;Green chemistry; | General procedure: In this work SBA-15 nanoreactor was synthesized by the procedure reported by Zhao et al. [6a] and then modified with mercaptopropyltrimethoxysilane (MPTMS) and oxidized to the sulfonic acid [6b] nanoparticle using hydrogen peroxide (Fig. 1). A mixture of diketene (3 mmol), aldehyde (1 mmol), enamine (1 mmol) and alcohol (4 mL) and SBA-15/SO3H (0.07 g, ~4 mol%) was reacted under neat conditions for appropriate time (TLC). After that, 20 mL hot EtOH was added to the reaction vessel and, with simple centrifuging, the catalyst was removed as filtrate, washed and then the product recrystallized from hot ethanol. All of the products are synthesized by four-component method and were identified by their physical and spectral data (mp, IR, 1H NMR and 13C NMR). | 
 [ 674-82-8 ]
                                                    
                                                    [ 674-82-8 ]
 [ 67-56-1 ]
                                                    
                                                    [ 67-56-1 ]
 [ 123-11-5 ]
                                                    
                                                    [ 123-11-5 ]
 [ 873-95-0 ]
                                                    
                                                    [ 873-95-0 ]
| Yield | Reaction Conditions | Operation in experiment | 
|---|---|---|
| 90% | With SBA-15/SO3H; In neat (no solvent); at 60℃; for 0.5h;Green chemistry; | General procedure: In this work SBA-15 nanoreactor was synthesized by the procedure reported by Zhao et al. [6a] and then modified with mercaptopropyltrimethoxysilane (MPTMS) and oxidized to the sulfonic acid [6b] nanoparticle using hydrogen peroxide (Fig. 1). A mixture of diketene (3 mmol), aldehyde (1 mmol), enamine (1 mmol) and alcohol (4 mL) and SBA-15/SO3H (0.07 g, ~4 mol%) was reacted under neat conditions for appropriate time (TLC). After that, 20 mL hot EtOH was added to the reaction vessel and, with simple centrifuging, the catalyst was removed as filtrate, washed and then the product recrystallized from hot ethanol. All of the products are synthesized by four-component method and were identified by their physical and spectral data (mp, IR, 1H NMR and 13C NMR). | 
 [ 674-82-8 ]
                                                    
                                                    [ 674-82-8 ]
 [ 64-17-5 ]
                                                    
                                                    [ 64-17-5 ]
 [ 555-16-8 ]
                                                    
                                                    [ 555-16-8 ]
 [ 873-95-0 ]
                                                    
                                                    [ 873-95-0 ]
| Yield | Reaction Conditions | Operation in experiment | 
|---|---|---|
| 95% | With SBA-15/SO3H; In neat (no solvent); at 60℃; for 0.416667h;Green chemistry; | General procedure: In this work SBA-15 nanoreactor was synthesized by the procedure reported by Zhao et al. [6a] and then modified with mercaptopropyltrimethoxysilane (MPTMS) and oxidized to the sulfonic acid [6b] nanoparticle using hydrogen peroxide (Fig. 1). A mixture of diketene (3 mmol), aldehyde (1 mmol), enamine (1 mmol) and alcohol (4 mL) and SBA-15/SO3H (0.07 g, ~4 mol%) was reacted under neat conditions for appropriate time (TLC). After that, 20 mL hot EtOH was added to the reaction vessel and, with simple centrifuging, the catalyst was removed as filtrate, washed and then the product recrystallized from hot ethanol. All of the products are synthesized by four-component method and were identified by their physical and spectral data (mp, IR, 1H NMR and 13C NMR). | 
 [ 674-82-8 ]
                                                    
                                                    [ 674-82-8 ]
 [ 64-17-5 ]
                                                    
                                                    [ 64-17-5 ]
 [ 104-88-1 ]
                                                    
                                                    [ 104-88-1 ]
 [ 873-95-0 ]
                                                    
                                                    [ 873-95-0 ]
| Yield | Reaction Conditions | Operation in experiment | 
|---|---|---|
| 90% | With SBA-15/SO3H; In neat (no solvent); at 60℃; for 0.416667h;Green chemistry; | General procedure: In this work SBA-15 nanoreactor was synthesized by the procedure reported by Zhao et al. [6a] and then modified with mercaptopropyltrimethoxysilane (MPTMS) and oxidized to the sulfonic acid [6b] nanoparticle using hydrogen peroxide (Fig. 1). A mixture of diketene (3 mmol), aldehyde (1 mmol), enamine (1 mmol) and alcohol (4 mL) and SBA-15/SO3H (0.07 g, ~4 mol%) was reacted under neat conditions for appropriate time (TLC). After that, 20 mL hot EtOH was added to the reaction vessel and, with simple centrifuging, the catalyst was removed as filtrate, washed and then the product recrystallized from hot ethanol. All of the products are synthesized by four-component method and were identified by their physical and spectral data (mp, IR, 1H NMR and 13C NMR). | 
| Yield | Reaction Conditions | Operation in experiment | 
|---|---|---|
| 85% | With SBA-15/SO3H; In neat (no solvent); at 60℃; for 0.583333h;Green chemistry; | General procedure: In this work SBA-15 nanoreactor was synthesized by the procedure reported by Zhao et al. [6a] and then modified with mercaptopropyltrimethoxysilane (MPTMS) and oxidized to the sulfonic acid [6b] nanoparticle using hydrogen peroxide (Fig. 1). A mixture of diketene (3 mmol), aldehyde (1 mmol), enamine (1 mmol) and alcohol (4 mL) and SBA-15/SO3H (0.07 g, ~4 mol%) was reacted under neat conditions for appropriate time (TLC). After that, 20 mL hot EtOH was added to the reaction vessel and, with simple centrifuging, the catalyst was removed as filtrate, washed and then the product recrystallized from hot ethanol. All of the products are synthesized by four-component method and were identified by their physical and spectral data (mp, IR, 1H NMR and 13C NMR). | 
 [ 674-82-8 ]
                                                    
                                                    [ 674-82-8 ]
 [ 67-56-1 ]
                                                    
                                                    [ 67-56-1 ]
 [ 100-52-7 ]
                                                    
                                                    [ 100-52-7 ]
 [ 873-95-0 ]
                                                    
                                                    [ 873-95-0 ]
| Yield | Reaction Conditions | Operation in experiment | 
|---|---|---|
| 90% | With SBA-15/SO3H; In neat (no solvent); at 60℃; for 0.416667h;Green chemistry; | General procedure: In this work SBA-15 nanoreactor was synthesized by the procedure reported by Zhao et al. [6a] and then modified with mercaptopropyltrimethoxysilane (MPTMS) and oxidized to the sulfonic acid [6b] nanoparticle using hydrogen peroxide (Fig. 1). A mixture of diketene (3 mmol), aldehyde (1 mmol), enamine (1 mmol) and alcohol (4 mL) and SBA-15/SO3H (0.07 g, ~4 mol%) was reacted under neat conditions for appropriate time (TLC). After that, 20 mL hot EtOH was added to the reaction vessel and, with simple centrifuging, the catalyst was removed as filtrate, washed and then the product recrystallized from hot ethanol. All of the products are synthesized by four-component method and were identified by their physical and spectral data (mp, IR, 1H NMR and 13C NMR). | 

A889012 [864226-10-8]
9-Aminospiro[4.5]dec-8-en-7-one
Similarity: 0.97

A426628 [1089708-69-9]
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