Structure of 24372-46-1
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The BI-3802 was designed by Boehringer Ingelheim and could be obtained free of charge through the Boehringer Ingelheim open innovation portal opnMe.com, associated with its negative control.
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| CAS No. : | 24372-46-1 |
| Formula : | C7H9NOS |
| M.W : | 155.22 |
| SMILES Code : | O=CC1=CC=C(N(C)C)S1 |
| MDL No. : | MFCD00708772 |
| InChI Key : | RRQFJMCAGDOEPI-UHFFFAOYSA-N |
| Pubchem ID : | 3157939 |
| GHS Pictogram: |
|
| Signal Word: | Warning |
| Hazard Statements: | H302-H315-H319-H332-H335 |
| Precautionary Statements: | P261-P280-P305+P351+P338 |
| Num. heavy atoms | 10 |
| Num. arom. heavy atoms | 5 |
| Fraction Csp3 | 0.29 |
| Num. rotatable bonds | 2 |
| Num. H-bond acceptors | 1.0 |
| Num. H-bond donors | 0.0 |
| Molar Refractivity | 43.91 |
| TPSA ? Topological Polar Surface Area: Calculated from |
48.55 Ų |
| Log Po/w (iLOGP)? iLOGP: in-house physics-based method implemented from |
1.79 |
| Log Po/w (XLOGP3)? XLOGP3: Atomistic and knowledge-based method calculated by |
1.85 |
| Log Po/w (WLOGP)? WLOGP: Atomistic method implemented from |
1.63 |
| Log Po/w (MLOGP)? MLOGP: Topological method implemented from |
0.44 |
| Log Po/w (SILICOS-IT)? SILICOS-IT: Hybrid fragmental/topological method calculated by |
2.18 |
| Consensus Log Po/w? Consensus Log Po/w: Average of all five predictions |
1.58 |
| Log S (ESOL):? ESOL: Topological method implemented from |
-2.21 |
| Solubility | 0.966 mg/ml ; 0.00623 mol/l |
| Class? Solubility class: Log S scale |
Soluble |
| Log S (Ali)? Ali: Topological method implemented from |
-2.49 |
| Solubility | 0.502 mg/ml ; 0.00323 mol/l |
| Class? Solubility class: Log S scale |
Soluble |
| Log S (SILICOS-IT)? SILICOS-IT: Fragmental method calculated by |
-1.71 |
| Solubility | 3.02 mg/ml ; 0.0195 mol/l |
| Class? Solubility class: Log S scale |
Soluble |
| GI absorption? Gatrointestinal absorption: according to the white of the BOILED-Egg |
High |
| BBB permeant? BBB permeation: according to the yolk of the BOILED-Egg |
Yes |
| P-gp substrate? P-glycoprotein substrate: SVM model built on 1033 molecules (training set) |
No |
| CYP1A2 inhibitor? Cytochrome P450 1A2 inhibitor: SVM model built on 9145 molecules (training set) |
Yes |
| CYP2C19 inhibitor? Cytochrome P450 2C19 inhibitor: SVM model built on 9272 molecules (training set) |
No |
| CYP2C9 inhibitor? Cytochrome P450 2C9 inhibitor: SVM model built on 5940 molecules (training set) |
No |
| CYP2D6 inhibitor? Cytochrome P450 2D6 inhibitor: SVM model built on 3664 molecules (training set) |
No |
| CYP3A4 inhibitor? Cytochrome P450 3A4 inhibitor: SVM model built on 7518 molecules (training set) |
No |
| Log Kp (skin permeation)? Skin permeation: QSPR model implemented from |
-5.93 cm/s |
| Lipinski? Lipinski (Pfizer) filter: implemented from |
0.0 |
| Ghose? Ghose filter: implemented from |
None |
| Veber? Veber (GSK) filter: implemented from |
0.0 |
| Egan? Egan (Pharmacia) filter: implemented from |
0.0 |
| Muegge? Muegge (Bayer) filter: implemented from |
1.0 |
| Bioavailability Score? Abbott Bioavailability Score: Probability of F > 10% in rat |
0.55 |
| PAINS? Pan Assay Interference Structures: implemented from |
0.0 alert |
| Brenk? Structural Alert: implemented from |
1.0 alert: heavy_metal |
| Leadlikeness? Leadlikeness: implemented from |
No; 1 violation:MW<1.0 |
| Synthetic accessibility? Synthetic accessibility score: from 1 (very easy) to 10 (very difficult) |
2.14 |
* 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.

[ 24372-46-1 ]

| Yield | Reaction Conditions | Operation in experiment |
|---|---|---|
| 82.5% | In water; at 100℃; for 12.0h; | Synthesis of 5-dimethylamino-2-thiophenecarboxyaldehyde (30) 5-Bromo-2-thiophenecarboxyaldehyde (1 g, 5.23 mmol) and dimethylamine (1.64 mL, 15.69 mmol) were mixed, followed by addition of purified water (3 mL). The mixture was reacted at 100C for 12 h, and then the layers were separated with chloroform (50 mL x 2) and purified water (50 mL), the chloroform layer was dried with anhydrous sodium sulfate, and then the solvent was evaporated under reduced pressure. The residue was subjected to medium-pressure preparative chromatography using ethyl acetate/hexane (1/1) as an elution solvent to obtain Compound 30. Yield 670 mg (yield rate 82.5%). 1H NMR (300 MHz, CDCl3) delta 3.10 (s, 6H), 5.96 (s, 1H), 7.45 (s, 1H), 9.44 (s, 1H). |
| Ca. 60% | With toluene-4-sulfonic acid; In water; at 100℃; for 24.0h; | To a 100 mL round bottom flask was added 5-bromothiophene-2-carbaldehyde (6 g, 32 mmol)And dimethylamine aqueous solution (16.2 mL, content 40%, 128 mmol)To a solution of p-toluenesulfonic acid (0.55 g, 3.2 mmol) as a catalyst,The reaction was refluxed at 100 C for about 24 h,Dimethylamine is volatile,Add about 8 mL of dimethylamine aqueous solution every 6 hours,Process point board tracking,Until 5-bromothiophene-2-carbaldehyde is completely reacted;After completion of the reaction, the mixture was cooled to room temperature,Down to about 60 mL of deionized water,Stirred at room temperature for 0.5 h,Extracted with 3 x 40 mL of dichloromethane;After extraction, the organic phase was combined,Dried over anhydrous sodium sulfate,Filter,Steaming concentrated solution;Using silica gel column chromatography separation and purification (eluent:Ethyl acetate / petroleum ether = 1/1),Finally, a dark red target product (yield of about 60%) was obtained. |
| Ca. 60% | With toluene-4-sulfonic acid; In water; at 100℃; for 24.0h; | 6 g of 5-bromothiophene-2-carbaldehyde and 16.2 mL of a 40% aqueous solution of dimethylamine were added to a round bottom flask equipped with a condensing device. 0.5 g of p-toluenesulfonic acid was added as a catalyst. The reaction was carried out by heating to 100 C. During the process, the raw material was monitored for 5-bromothiophene-2-ylformaldehyde. The dimethylamine was volatile, and a certain amount of dimethylamine aqueous solution was added every 6 hours until the reaction of 5-bromothiophene-2 formaldehyde was complete, and the reaction took about 24 hours; After completion, it was cooled to room temperature, 60 mL of deionized water was added, stirred for 0.5 h, and then extracted with dichloromethane; the organic phase was combined, dried over anhydrous sodium sulfate for 24 h, then filtered, and concentrated by rotary evaporation; The method was separated and purified (eluent ethyl acetate: petroleum ether = 1:1, Rf = 0.2) to give red 5-(dimethylamino)thiophene-2-carbaldehyde in a yield of about 60%. |
[ 24372-46-1 ]
[ 650628-65-2 ]
| Yield | Reaction Conditions | Operation in experiment |
|---|---|---|
| 95% | With pyrrolidine; In ethanol; for 12.0h;Heating / reflux; | A mixture of [4-HYDRAZINO-1- (3-METHOXYPHENYL)-1 H-PYRAZOLO] [3, [4-DJPYRIMIDINE] (Intermediates Example T) (100 mg, 0.392 [MMOL),] [5- (DIMETHYLAMINO)-2-] [THIOPHENECARBALDEHYDE] (77 mg, [0.] 499 [MMOL),] and [PYRROLIDINE] (2 drops) in [ETOH] (10 mL) was heated at reflux for 12 h. The solid was filtered and washed with hexanes to yield product (142 mg, 95%) as a yellow solid. 'H NMR (400 MHz, DMSO) [8] 11.97 (s, 1 H), 8.48 (s, 1 H), 8.38 (s, [1] H), 8.22 (s, [1] H), 7.87- 7.83 (m, 2H), 7.44 (t, 1 H), 7.16 (d, [1] H), 6.91 (m, 1 H), 5.90 (d, 1 H), 3.82 (s, 3H), 3.00 (s, 6H) ppm; ES-MS m/z 394 [(MH+).] |
[ 3199-50-6 ]
[ 24372-46-1 ]
| Yield | Reaction Conditions | Operation in experiment |
|---|---|---|
| 11.4% | With potassium hydroxide; In ethanol; water; at 20℃; for 3h; | Synthesis of 1-(5-bromo-2-furyl)-3-(5-dimethylamino-2-thienyl)-prop-2-en-1-one (35) Compound 29 (97 mg, 0.51 mmol) and Compound 30 (75 mg, 0.48 mmol) were dissolved in ethanol (1.5 mL), and 10% aqueous potassium hydroxide (0.5 mL) was added dropwise with stirring. The mixture was stirred at room temperature for 3 h, then the solvent was evaporated under reduced pressure, followed by addition of 1 N aqueous sodium hydroxide, and the mixture was extracted with ethyl acetate. The mixture was dried with anhydrous sodium sulfate, then the solvent was evaporated under reduced pressure, and the residue was subjected to silica gel column chromatography using ethyl acetate/hexane (2/7) as an elution solvent to obtain Compound 35. Yield 18 mg (yield rate 11.4%). 1H NMR (300 MHz, CDCl3) delta 3.08 (s, 6H), 5.85 (d, J = 3.9 Hz, 1H), 6.48 (d, J = 3.6 Hz, 1H), 6.72 (d, J = 15 Hz, 1H), 7.14-7.16 (m, 2H), 7.91 (d, J = 15 Hz, 1H). MS m/z 327 (MH+). |
[ 30955-94-3 ]
[ 24372-46-1 ]
| Yield | Reaction Conditions | Operation in experiment |
|---|---|---|
| 7.9% | With potassium hydroxide; In ethanol; water; at 20℃; for 3.0h; | Synthesis of 3-(5-dimethylamino-2-thienyl)-1-(5-iodo-2-thienyl)-prop-2-en-1-one (37) 2-Acetyl-5-iodothiophene (123 mg, 0.49 mmol) and Compound 30 (76 mg, 0.49 mmol) were dissolved in ethanol (3 mL), and 10% aqueous potassium hydroxide (1 mL) was added dropwise with stirring. The mixture was stirred at room temperature for 3 h, then the solvent was evaporated under reduced pressure, followed by addition of 1 N aqueous sodium hydroxide, and the mixture was extracted with ethyl acetate. The mixture was dried with anhydrous sodium sulfate, then the solvent was evaporated under reduced pressure, and the residue was subjected to silica gel column chromatography using ethyl acetate/hexane (1/4) as an elution solvent to obtain compound 37. Yield 15 mg (yield rate 7.9%). 1H NMR (300 MHz, CDCl3) delta 3.07 (s, 6H), 5.85 (d, J = 4.2 Hz, 1H), 6.63 (d, J = 14.7 Hz, 1H), 7.15 (d, J = 4.5 Hz, 1H), 7.29 (d, J = 3.9 Hz, 1H), 7.38 (d, J = 4.2 Hz, 1H), 7.87 (d, J = 14.7 Hz, 1H). MS m/z 389 (M+). |
[ 13329-40-3 ]
[ 24372-46-1 ]
| Yield | Reaction Conditions | Operation in experiment |
|---|---|---|
| 4.7% | With potassium hydroxide; In ethanol; water; at 20℃; for 3.0h; | Synthesis of 3-(5-dimethylamino-2-thienyl)-1-(4-iodophenyl)-prop-2-en-1-one (33) 4-Iodoacetophenone (246 mg, 1.00 mmol) and Compound 30 (155 mg, 1.00 mmol) were dissolved in ethanol (5 mL), followed by addition of 10% aqueous potassium hydroxide (7.5 mL). The mixture was reacted at room temperature for 3 h, the layers were separated with ethyl acetate (50 mL x 2), and the ethyl acetate layer was dried with anhydrous sodium sulfate. The solvent was evaporated under reduced pressure, and the residue was subjected to medium-pressure preparative chromatography using ethyl acetate/hexane (1/4) as an elution solvent to obtain Compound 33. Yield 18 mg (yield rate 4.7%). 1H NMR (300 MHz, CDCl3) delta 3.04 (s, 6H), 5.22 (d, J = 3.9 Hz, 1H), 6.80 (d, J = 3.6 Hz, 1H), 6.89 (d, J = 15.0 Hz, 1H), 7.46 (d, J = 14.7 Hz, 1H), 7.70 (d, J = 8.1 Hz, 2H), 7.81 (d, J = 8.7 Hz, 2H). MS m/z 383 (M+). |
| Yield | Reaction Conditions | Operation in experiment |
|---|---|---|
| 82.5% | With dimethyl amine; In hexane; water; ethyl acetate; | Synthesis of 5-dimethylamino-2-thiophenecarboxyaldehyde (30) 5-Bromo-2-thiophenecarboxyaldehyde (1 g, 5.23 mmol) and dimethylamine (1.64 mL, 15.69 mmol) were mixed, followed by addition of purified water (3 mL). The mixture was reacted at 100 C. for 12 h, and then the layers were separated with chloroform (50 mL*2) and purified water (50 mL), the chloroform layer was dried with anhydrous sodium sulfate, and then the solvent was evaporated under reduced pressure. The residue was subjected to medium-pressure preparative chromatography using ethyl acetate/hexane (1/1) as an elution solvent to obtain Compound 30. Yield 670 mg (yield rate 82.5%). 1H NMR (300 MHz, CDCl3) delta 3.10 (s, 6H), 5.96 (s, 1H), 7.45 (s, 1H), 9.44 (s, 1H). |
[ 3199-50-6 ]

[ 24372-46-1 ]
| Yield | Reaction Conditions | Operation in experiment |
|---|---|---|
| 11.4% | With sodium hydroxide; In ethanol; hexane; ethyl acetate; | Synthesis of 1-(5-bromo-2-furyl)-3-(5-dimethylamino-2-thienyl)-prop-2-en-1-one (35) Compound 29 (97 mg, 0.51 mmol) and Compound 30 (75 mg, 0.48 mmol) were dissolved in ethanol (1.5 mL), and 10% aqueous potassium hydroxide (0.5 mL) was added dropwise with stirring. The mixture was stirred at room temperature for 3 h, then the solvent was evaporated under reduced pressure, followed by addition of 1 N aqueous sodium hydroxide, and the mixture was extracted with ethyl acetate. The mixture was dried with anhydrous sodium sulfate, then the solvent was evaporated under reduced pressure, and the residue was subjected to silica gel column chromatography using ethyl acetate/hexane (2/7) as an elution solvent to obtain Compound 35. Yield 18 mg (yield rate 11.4%). 1H NMR (300 MHz, CDCl3) delta 3.08 (s, 6H), 5.85 (d, J=3.9 Hz, 1H), 6.48 (d, J=3.6 Hz, 1H), 6.72 (d, J=15 Hz, 1H), 7.14-7.16 (m, 2H), 7.91 (d, J=15 Hz, 1H). MS m/z 327 (MH+). |
[ 30955-94-3 ]

[ 24372-46-1 ]
| Yield | Reaction Conditions | Operation in experiment |
|---|---|---|
| 7.9% | With sodium hydroxide; In ethanol; hexane; ethyl acetate; | Synthesis of 3-(S-dimethylamino-2-thienyl)-1-(5-iodo-2-thienyl)-prop-2-en-1-one (37) 2-Acetyl-5-iodothiophene (123 mg, 0.49 mmol) and Compound 30 (76 mg, 0.49 mmol) were dissolved in ethanol (3 mL), and 10% aqueous potassium hydroxide (1 mL) was added dropwise with stirring. The mixture was stirred at room temperature for 3 h, then the solvent was evaporated under reduced pressure, followed by addition of 1 N aqueous sodium hydroxide, and the mixture was extracted with ethyl acetate. The mixture was dried with anhydrous sodium sulfate, then the solvent was evaporated under reduced pressure, and the residue was subjected to silica gel column chromatography using ethyl acetate/hexane (1/4) as an elution solvent to obtain compound 37. Yield 15 mg (yield rate 7.9%). 1H NMR (300 MHz, CDCl3) delta 3.07 (s, 6H), 5.85 (d, J=4.2 Hz, 1H), 6.63 (d, J=14.7 Hz, 1H), 7.15 (d, J=4.5 Hz, 1H), 7.29 (d, J=3.9 Hz, 1H), 7.38 (d, J=4.2 Hz, 1H), 7.87 (d, J=14.7 Hz, 1H). MS m/z 389 (M+). |

[ 13329-40-3 ]
[ 24372-46-1 ]
| Yield | Reaction Conditions | Operation in experiment |
|---|---|---|
| 4.7% | In ethanol; hexane; ethyl acetate; | Synthesis of 3-(5-dimethylamino-2-thienyl)-1-(4-iodophenyl)-prop-2-en-1-one (33) 4-Iodoacetophenone (246 mg, 1.00 mmol) and Compound 30 (155 mg, 1.00 mmol) were dissolved in ethanol (5 mL), followed by addition of 10% aqueous potassium hydroxide (7.5 mL). The mixture was reacted at room temperature for 3 h, the layers were separated with ethyl acetate (50 mL*2), and the ethyl acetate layer was dried with anhydrous sodium sulfate. The solvent was evaporated under reduced pressure, and the residue was subjected to medium-pressure preparative chromatography using ethyl acetate/hexane (1/4) as an elution solvent to obtain Compound 33. Yield 18 mg (yield rate 4.7%). 1H NMR (300 MHz, CDCl3) delta 3.04 (s, 6H), 5.22 (d, J=3.9 Hz, 1H), 6.80 (d, J=3.6 Hz, 1H), 6.89 (d, J=15.0 Hz, 1H), 7.46 (d, J=14.7 Hz, 1H), 7.70 (d, J=8.1 Hz, 2H), 7.81 (d, J=8.7 Hz, 2H). MS m/z 383 (M+). |
| Yield | Reaction Conditions | Operation in experiment |
|---|---|---|
| 67% | In acetic anhydride; for 0.05h;Reflux; | A solution of 2b (0.11g, 0.73mmol) and 1,2,3,3-tetramethyl-3H-indolium perchlorate (0.20g, 0.73mmol) in freshly distilled acetic anhydride (5mL) was heated under reflux for 3min. The crystalline residue formed upon cooling was filtered off, washed with EtOAc (5mL) and Et2O (5mL) to afford 4b (0.20g, 67%) as blue crystals with a metallic lustre. Mp. 229-231C (dec.). IR: 584, 619, 702, 797, 911, 1081, 1207, 1259, 1311, 1384, 1411, 1476, 1551, 2925, 3373. 1H NMR (DMSO-d6): 1.66 (s, 6H), 3.31 (s, 6H), 3.61 (s, 3H), 6.04 (d, J=13.8, 1H), 6.69 (m, 1H), 7.23 (m, 1H), 7.38 (m, 2H), 7.58 (d, J=7.0, 1H), 8.00 (m, 1H), 8.33 (d, J=13.8, 1H). 13C NMR (CDCl3): 26.8, 31.1, 42.9, 48.9, 97.5, 111.0, 111.8, 122.2, 124.8, 126.1, 128.2, 140.8, 142.5, 142.7, 148.2, 173.1, 173.9. HRMS (TOF ESI): calcd for [C29H23N2S]+: 311.1577; found: 311.1583. |
| Yield | Reaction Conditions | Operation in experiment |
|---|---|---|
| 52% | In acetonitrile; for 288.0h;Reflux; | A solution of 1 (0.17g, 0.55mmol), 2b (0.090g, 0.58mmol) and CF3CO2H (0.023mL, 0.30mmol) in CH3CN (20mL) was heated under reflux for 12 days. After cooling to ambient temperature the crystalline residue formed was filtered off and washed consequently with EtOAc (3mL), hexanes (3mL) and Et2O (10mL) to afford 3b (0.16g, 52%) as a green solid with a metallic lustre. Mp. 222-224C. IR: 592, 706, 749, 810, 840, 906, 1019, 1075, 1132, 1189, 1263, 1315, 1380, 1463, 1541, 1589, 1667, 3095, 3385. 1H NMR (DMSO-d6): 1.68 (s, 6H), 3.34 (s, 6H), 5.39 (s, 2H), 6.10 (d, J=14.0, 1H), 6.77 (d, J=5.0, 1H), 7.04 (d, J=9.0, 1H), 7.25 (t, J=7, 1H), 7.37-7.45 (m, 2H), 7.62 (d, J=7.0, 1H), 7.98 (d, J=5.0, 1H), 8.03 (m, 1H), 8.09 (d, J=9.0, 1H), 8.31 (d, J=14.0, 1H). 13C NMR (DMSO-d6): 27.1, 42.1, 43.2, 48.6, 97.9, 111.1, 113.3, 115.7, 118.0, 122.2, 124.3, 124.5, 125.6, 127.1, 128.3, 139.3, 140.3, 142.2, 142.4, 148.8, 162.0, 172.7, 174.2. 19F NMR (CDCl3):-73.39 (CF3); HRMS (TOF ESI): calcd for [C25H26N3O3S]+: 448.1689; found: 448.1684. |

[ 24372-46-1 ]
[ 2785-06-0 ]
[ 24372-46-1 ]
| Yield | Reaction Conditions | Operation in experiment |
|---|---|---|
| 13% | With piperidine; In ethanol; for 6.0h;Reflux; | General procedure: A solution of aldehyde 2a-f (1mmol), benzothiazolium salt 1 (1mmol) and piperidine (1 drop) in ethanol (10ml) was heated at reflux for 6h. After this time the solid that precipitated from the reaction mixture was filtered and washed with cold ethanol to give the pure products. |
[ 28286-88-6 ]
[ 24372-46-1 ]
| Yield | Reaction Conditions | Operation in experiment |
|---|---|---|
| 22% | With piperidine; In acetonitrile; for 16.0h;Reflux; | <strong>[24372-46-1]5-(dimethylamino)thiophene-2-carbaldehyde</strong>(310.0 mg, 2.0 mmol) was added to (2,6-dimethyl-4H-pyran-4-ylidene) malononitrile (310.0 mg, 1.8 mmol) in acetonitrile (30.0mL) followed by piperidine (200 muL). The solution was heated to reflux for 16 h and then cooled to room temperature. After extraction with ethylacetate, the organic phase was dried over Na2SO4 andfiltered. The filtrate was concentrated, and the residue was purified by silicagel chromatography (hexane : ethyl acetate 2 :1) to give 123.1 mg of PT-1 (22%). |
[ 24372-46-1 ]
[ 58464-25-8 ]
| Yield | Reaction Conditions | Operation in experiment |
|---|---|---|
| With piperidine; In ethanol; at 85℃; for 12.0h; | Take 0.5g of 4-dimethylaminothiophene-2-carboxaldehyde and the corresponding mass of 1,1,2,3-tetramethyl-1H-benzo[e]indolium iodide (The molar ratio of the two is 1.1:1). Add to 20mL of absolute ethanol. 2 to 3 drops of piperidine were added dropwise as a catalyst, and the mixture was refluxed at 85 C for 12 hours; after completion of the reaction, it was cooled to room temperature, and most of the solvent was removed by rotary evaporation. Then, it was poured into diethyl ether and precipitated, and the product was obtained by filtration. After drying, it is recrystallized several times with ethanol. vacuum drying, obtain (E)-2-(2-(5-(dimethylamino)thiophen-2-yl)vinyl)-1,1,3-trimethyl-1H-benzo[e]indolium iodide. |

[ 24372-46-1 ]
| Yield | Reaction Conditions | Operation in experiment |
|---|---|---|
| 85% | With acetic anhydride; at 60 - 90℃; for 0.5h; | General procedure: A solution of the corresponding aldehyde (2 mmol) dissolved inacetic anhydride (2 mL) was added to a solution of 7acetyl10,10dimethyl6oxo6,10dihydropyrido[1,2a]indol8yl difluoridoborate (4) (0.63 g, 2 mmol) in acetic anhydride (6 mL) at60 C. The mixture was heated at 90 C for 0.5 h. After cooling,a precipitate formed was filtered off, washed on the filter withacetic acid, and recrystallized from acetic acid. |
[ 24372-46-1 ]

| Yield | Reaction Conditions | Operation in experiment |
|---|---|---|
| 57% | With acetic anhydride; for 0.08333330000000001h;Reflux; | General procedure: A solution of 9-(2-carboxyphenyl)-6-(N,N-diethylamino)-1,2,3,4-tetrahydroxanthylium perchlorate (1) (0.20 g, 0.42 mmol)and 4-(N,N-dimethylamino)benzaldehyde (2a) (0.63 g, 0.42 mmol)in freshly distilled acetic anhydride (5 mL) was heated under refluxfor 5 min. After cooling to room temperature, the precipitated solidwasfiltered off under reduced pressure, washed with ethyl acetateand diethyl ether and recrystallized from glacial acetic acid/acetonitrile (5/1, v/v), to afford chromatographically pure shinninggreen crystals. Yield 66%. |

[ 24372-46-1 ]
| Yield | Reaction Conditions | Operation in experiment |
|---|---|---|
| 75% | With piperidine; | (E)-5-((4-(dihexadecylamino)phenyl)ethynyl)-2-(2-(5-(dimethylamino)thiophen-2-yl)vinyl)-1,3,3-trimethyl-3H-indol-1-iumiodide(YS) were synthesized by a condensation reaction of 4 with 5which was obtained by previous work [29] in the presence ofpiperidine. After cooling to room temperature, the organic phasewas dried and evaporated, leaving a blue solid residue. The residuewas subjected to rapid silica filtration to give YS as a blue solid(75%). Rf (18:1 CH2Cl2: MeOH) 0.40; 1H NMR (CDCl3, 500 MHz): delta = 0.89 (9H, m), 1.28 (52H, m), 1.42 (6H, m), 1.73 (4H, m), 3.27 (4H,m), 3.78 (6H, m), 5.97 (1H, d, J = 8.5 Hz), 6.57 (2H, d, J = 9.0 Hz), 6.56(1H, d, J = 5.0 Hz), 7.07 (1H, d, J = 8.0 Hz), 7.35 (2H, d, J = 9.0 Hz),7.42 (1H, d, J = 4.5 Hz), 7.47 (1H, d, J = 4.5 Hz), 8.06 (1H, d,J = 5.0 Hz), 8.18 (1H, s)ppm; FT-IR (KBr, cm-1): nu = 3452, 2852,1668,1519, 1466, 1308, 1173, 742; MALDI-TOF-MS (dithranol): m/z: calcdfor C59H92IN3S: 1002.37 g mol-1; found: 1003.8 g mol-1 [MH]+;elemental analysis calcd (%) for C59H92IN3S (1002.37): C 70.70, H9.25, N 4.19; found: C 70.71, H 9.27, N 4.16. |
[ 951-00-8 ]
[ 24372-46-1 ]
| Yield | Reaction Conditions | Operation in experiment |
|---|---|---|
| 38% | With piperidine; In ethanol; for 12.0h;Reflux; | 9,10-dimethylacridine iodide (0.3 g, 1.3 mmol) and 5- (dimethylamino) thiophene-2-carbaldehyde (0.3 g, 2 mmol) were dissolved in 10 mL of ethanol,Add 1 drop (about 0.05mL) piperidine as a catalyst,Reflux reaction 12h;After the reaction,Rotate to remove most of the solvent,Poured into excess ether and precipitated. After filtration, the methanol was recrystallized to give a dark green solid (yield 38%). |
| Yield | Reaction Conditions | Operation in experiment |
|---|---|---|
| 21% | With piperidine; In acetonitrile; for 16.0h;Reflux; | 2,6-dimethyl-4-pyranylenemalononitrile (172.0 mg, 1.00 mmol)And 5- (dimethylamino) -2-thiophenecarboxaldehyde (155.0 mg, 1.00 mmol),Dissolved in 10 mL acetonitrile, then add 200 muL piperidine, refluxed for 16 hours with stirring; evaporated to acetonitrile,The residue was washed with water, extracted with ethyl acetate, and dried over anhydrous magnesium sulfate overnight. The ethyl acetate layer was swirledCrude product. The crude product was separated by column chromatography (eluent ethyl acetate: n-hexane = 5: 1)64.9 mg PAD-1 was obtained with the following structure in a yield of 21.0%. |

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