Purity | Size | Price | VIP Price | USA Stock *0-1 Day | Global Stock *5-7 Days | Quantity | ||||||
{[ item.p_purity ]} | {[ item.pr_size ]} | Inquiry |
{[ getRatePrice(item.pr_usd, 1,1,item.pr_is_large_size_no_price) ]} {[ getRatePrice(item.pr_usd,item.pr_rate,item.mem_rate,item.pr_is_large_size_no_price) ]} |
{[ getRatePrice(item.pr_usd, 1,1,item.pr_is_large_size_no_price) ]} | Inquiry {[ getRatePrice(item.pr_usd,item.pr_rate,item.mem_rate,item.pr_is_large_size_no_price) ]} {[ getRatePrice(item.pr_usd,1,item.mem_rate,item.pr_is_large_size_no_price) ]} | {[ item.pr_usastock ]} | in stock Inquiry - | {[ item.pr_chinastock ]} | {[ item.pr_remark ]} in stock Inquiry - | Login | Inquiry |
Please Login or Create an Account to: See VIP prices and availability
CAS No. : | 3966-32-3 | MDL No. : | MFCD00004250 |
Formula : | C9H10O3 | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | DIWVBIXQCNRCFE-MRVPVSSYSA-N |
M.W : | 166.17 | Pubchem ID : | 2724294 |
Synonyms : |
|
Signal Word: | Warning | Class: | N/A |
Precautionary Statements: | P261-P305+P351+P338 | UN#: | N/A |
Hazard Statements: | H315-H319-H335 | Packing Group: | N/A |
GHS Pictogram: |
* 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 |
---|---|---|
With MORPHIN | ||
Multi-step reaction with 2 steps 1.1: LDA / tetrahydrofuran / 0.5 h / 0 °C 1.2: tetrahydrofuran / 2 h / 0 - 20 °C 2.1: (R)-BINOL-SnCl4 / toluene; CH2Cl2 / 1 h / -78 °C 2.2: aq. HCl / toluene; CH2Cl2 | ||
Multi-step reaction with 2 steps 1: 38 percent / ClCO2Et, Et3N / tetrahydrofuran 2: aq. HCl / 20 h / Heating |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multistep reaction; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
25% | With dmap; dicyclohexyl-carbodiimide In dichloromethane for 24h; | |
With dmap; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride In dichloromethane Inert atmosphere; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With dmap; dicyclohexyl-carbodiimide | ||
With dmap; dicyclohexyl-carbodiimide In dichloromethane at 20℃; | Preparation of model MPA esters General procedure: A mixture of 2 mL of S-2-methylbutanol, 5.7 mg of S-MPA, 9.4 mg of DCC, and catalytic amount of DMAP in 300 mL of CH2Cl2 was allowed to stand at room temperature for 4 h. The product was directly applied for separation on preparative silica TLC (EtOAc) to give 5.1 mg of S-MPA ester. R-MPA ester was prepared in a similar way. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With dmap; N-(3-dimethylaminopropyl)-N-ethylcarbodiimide In dichloromethane at 20℃; for 2h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With dmap; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride In dichloromethane at 20℃; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With CSP 9803/5601; trifluoroacetic acid In di-isopropyl ether Resolution of racemate; | 17 The various columns containing the CSPs are conditioned with the eluant used, for 1 hour, before injection of the racemic product to be separated. [0102] The chromatographic conditions are as follows: [0103] mobile phase flow rate: 1 ml/mn; [0104] UV detection at 254 nm; [0105] optical density scale: 0.1; [0106] injection of a solution comprising 1 mg of the racemic product to be separated given below in 1 ml of eluant also given below. The results of the rounds of chromatography are given in tables 1 and 2 below. [0108] For each measurement, the retention times t of each of the recovered enantiomers, and also the capacity factor k'2 and the selectivity factor α, are indicated. | |
With CSP 9803/5301; trifluoroacetic acid In di-isopropyl ether Resolution of racemate; | 17 The various columns containing the CSPs are conditioned with the eluant used, for 1 hour, before injection of the racemic product to be separated. [0102] The chromatographic conditions are as follows: [0103] mobile phase flow rate: 1 ml/mn; [0104] UV detection at 254 nm; [0105] optical density scale: 0.1; [0106] injection of a solution comprising 1 mg of the racemic product to be separated given below in 1 ml of eluant also given below. The results of the rounds of chromatography are given in tables 1 and 2 below. [0108] For each measurement, the retention times t of each of the recovered enantiomers, and also the capacity factor k'2 and the selectivity factor α, are indicated. | |
With CSP 9803/5901; trifluoroacetic acid In di-isopropyl ether Resolution of racemate; | 17 The various columns containing the CSPs are conditioned with the eluant used, for 1 hour, before injection of the racemic product to be separated. [0102] The chromatographic conditions are as follows: [0103] mobile phase flow rate: 1 ml/mn; [0104] UV detection at 254 nm; [0105] optical density scale: 0.1; [0106] injection of a solution comprising 1 mg of the racemic product to be separated given below in 1 ml of eluant also given below. The results of the rounds of chromatography are given in tables 1 and 2 below. [0108] For each measurement, the retention times t of each of the recovered enantiomers, and also the capacity factor k'2 and the selectivity factor α, are indicated. |
With CSP 9803/5701; trifluoroacetic acid In di-isopropyl ether Resolution of racemate; | 17 The various columns containing the CSPs are conditioned with the eluant used, for 1 hour, before injection of the racemic product to be separated. [0102] The chromatographic conditions are as follows: [0103] mobile phase flow rate: 1 ml/mn; [0104] UV detection at 254 nm; [0105] optical density scale: 0.1; [0106] injection of a solution comprising 1 mg of the racemic product to be separated given below in 1 ml of eluant also given below. The results of the rounds of chromatography are given in tables 1 and 2 below. [0108] For each measurement, the retention times t of each of the recovered enantiomers, and also the capacity factor k'2 and the selectivity factor α, are indicated. | |
With CSP 9803/5801; trifluoroacetic acid In di-isopropyl ether Resolution of racemate; | 17 The various columns containing the CSPs are conditioned with the eluant used, for 1 hour, before injection of the racemic product to be separated. [0102] The chromatographic conditions are as follows: [0103] mobile phase flow rate: 1 ml/mn; [0104] UV detection at 254 nm; [0105] optical density scale: 0.1; [0106] injection of a solution comprising 1 mg of the racemic product to be separated given below in 1 ml of eluant also given below. The results of the rounds of chromatography are given in tables 1 and 2 below. [0108] For each measurement, the retention times t of each of the recovered enantiomers, and also the capacity factor k'2 and the selectivity factor α, are indicated. | |
With (3R,4S)-4-(3,5-dinitrobenzamido)-1,2,3,4-tetrahydrophenanthren-3-yl covalently linked to 3-propyl silica surface In hexane; acetic acid; isopropyl alcohol at 25℃; Resolution of racemate; | ||
With cellulose-modified silica gel In hexane; isopropyl alcohol Resolution of racemate; | ||
With ammonium acetate; acetic acid In ethanol; water Resolution of racemate; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
100 % de | In water; isopropyl alcohol Resolution of racemate; | 3 Example 3; Optical Resolution of MMAA with Optically Active α-Methoxyphenylacetic Acid; To the (RS)-MMAA 1.00 g (5.84 mmol) was added to 2-propanol 5 g and (R)-α-methoxyphenylacetic acid 0.96 g (5.84 mmol, molar ratio 1:1). After addition of water 0.1 g, the mixture was heated to dissolve the solids. The resulting solution was gradually cooled to 25° C., and a small amount of previously prepared (S)-MMAA.(R)-α-methoxyphenylacetic acid was added as the seed crystals. The solution was cooled to 20° C. The precipitated crystals were filtered and dried. Crude (S)-MMAA.(R)-α-methoxyphenylacetic acid was 0.51 g. The yield based on the (S)-MMAA in the (RS)-MMAA was 52%, and the optical purity of the salt was 73.3% de. The salt was recrystallized from 2-propanol to give pure (S)-MMAA.(R)-α-methoxyphenylacetic acid. The optical purity of the MMAA in the pure salt was 100% de. m.p.: 106.0-106.8° C. Rotation: [α]D20-61.3° (c 1.0, EtOH) IR (KBr) cm-1: 3316 3062, 2876, 1620, 1567, 1395, 1196, 1093, 1073, 700. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With hydrogenchloride In tetrahydrofuran; dichloromethane | 10.C Step C: Step C: Preparation of 1-(5-(2-hydroxyethylsulfonyl)-4-n-propoxy-3-methoxyphenyl)-4-(3,4,5-trimethoxyphenyl)-4-oxo-butan-1-yl-(R)-(O)-methylmandelate At ambient temperature, a solution of 1-(5-(2-t-butyldimethylsilyloxyethylsulfonyl)-4-n-propoxy-3-methoxyphenyl)-4-oxo-4-(3,4,5-trimethoxyphenyl-1-butanol (640 mg, 1 mmole) in dry CH2 Cl2 (20 ml) was treated with EDAC. HCl (380 mg, 2 mmole), R(-)-α-methoxyphenylacetic acid (200 mg, 1.2 mmole), and a catalytic amount of 4-dimethylaminopyridine, and stirred for 3-hours. The reaction mixture was diluted with ether, washed with water and brine, dried over anhydrous MgSO4, and evaporated to dryness to provide 1-(5-(2-t-butyldimethylsilyloxyethylsulfonyl-4-n-propoxy-3-methoxyphenyl)-4-(3,4,5-trimethoxyphenyl) -4-oxo-butan-1-yl-(R)-(O)-methylmandelate. This crude product was dissolved in THF (20 ml), treated with 1 N HCl (6 mL), and stirred at room temperature for 4-6 hours. The mixture was diluted with ether, washed with water and brine, dried over anhydrous MgSO4, and evaporated in vacuo to provide a pale yellow oil. The oil was purified by flash chromatography on SiO2 to afford a mixture of diasteriomeric mandelates. The diastereomeric esters were then carefully separated using flash column chromatography on SiO2 to provide the more mobile ester 1-(5-(2-hydroxyethylsulfonyl)-4-n-propoxy-3-methoxyphenyl)-4-(3,4,5-trimethoxyphenyl)-4-oxo-butan-1-yl(R)-(O)-methylmandelate, the less mobile ester and a mixture of the two esters. Each diastereoisomer was >95% pure by NMR. The more mobile esters, NMR (CDCl3): δ (1.04 (t, J=7.5 Hz, CH2 CH2 CH3), 1.86 (m, CH2 CH2 CH3), 2.2 (m, CH2 CHO-mandelate), 2.68 (t, J=7 Hz, COCH2), 3.38 (s, PhCHOCH3), 3.64 (m, SO2 CH2 CH2 OH), 3.8-4.00 (s, 4 ArOCH3, and m, SO2 CH2 CH2 OH), 4.12 (t, J=7.0 Hz OCH2 CH2 CH3), 4.82 (s, PHCHOCH3), 5.86 (t, J=6.5 Hz, CH2 CHO-mandelate), 7.02 (s, trimethoxyphenyl H-2, H-6), 7.09 (d, J=1.5 Hz, sulfonylphenyl H-6), 7.24-7.48 (m, PhCHOCH3), 7.53 (d, J=1.5 Hz, sulfonylphenyl H-2). The less mobile esters, NMR (CDCl3): δ 1.02 (t, J=7.5 Hz CH2 CH2 CH3), 1.84 (m, CH2 CH2 CH3), 2.29 (m, CH2 CHO-mandelate), 2.72 (t, J=7 Hz SO2 CH2 CH2 OH), 2.96 (t, J=7 Hz, COCH2), 3.37 (s, PhCHOCH3), 3.75 (m, SO2 CH2 CH2 OH), 3.64 (s, 1 Ar,OCH3), 3.8-4.00 (s, 3-ArOCH3 and m, SO2 CH2 CH2 OH), 4.06 (r, J=7 Hz, CH2 CH2 CH3) 4.77 (s, PhCHOCH3), 5.9 (t, J= 6.5 Hz, CH2 CHO-mandelate), 6.82 (d, J=1.5 Hz, sulfonylphenyl H-6), 7.14 (s, trimethoxyphenyl, H-2, H-6), 4.24-4.38 (m, PhCHOCH3 and d, sulfonylphenyl H-2). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
1: 85% 2: 81% | With triethylamine; HATU In dichloromethane at 20℃; for 1h; | 34 Synthesized according to General Procedure 34. To a stirring solution of 2-(3,5-dichlorophenyl)morpholine oxalate (50 mg, 0.16 mmol), triethylamine (22 μL, 0.16 mmol), (R)-(-)- α-OMe-phenylacetic acid (26 mg, 0.16 mmol), and CH2Cl 2 (0.5 mL), under N2, at 5° C., was added HATU (58 mg, 0.16 mmol). The solution was stirred at ambient temperature for 1 hour. The solution was purified via silica gel using 20-50% EtOAc in hexane to obtain the (R,R)-product (first to elute, 24 mg, 81% yield) and (R,S)-product (second to elute, 25 mg, 85% yield) as clear oils. LC/MS (10%-99% CH3CN (0.035% TFA)/H2O (0.05% TFA)), (R,R) m/z: M+1 obs=380.3; tR=2.05 min. (R,S) m/z: M+1 obs=380.3; tR=1.96 min. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With dmap; dicyclohexyl-carbodiimide In dichloromethane at 20℃; for 2h; | S1.4.10. Synthesis of MPA esters of ()-notopolyenol A ((±)-1) and falcarindiol (5) General procedure: MPA esters were prepared according to the method reported by Yang Zhao et al. [18] with a slight modification. To a solution of the alcohol compound (1.5 mg) in dry DCM (0.5 mL) was added R or S-MPA (2 mg, 0.012 mmol, 2.0 equiv), DCC (2.4 mg, 0.012 mmol, 2.0 equiv) and catalytic amount of DMAP. After reacting at room temperature for 2 h, the crude product was purified by preparative TLC eluting with PE/EtOAc to afford the corresponding MPA ester. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
35% | With dmap; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride In dichloromethane at 20℃; for 1h; |
[ 5394-87-6 ]
2-Isopropoxy-2-phenylacetic acid
Similarity: 0.98
[ 63450-88-4 ]
Sodium 2-methoxy-2-phenylacetate
Similarity: 0.98
[ 157134-51-5 ]
(S)-2-Methoxy-2-(naphthalen-2-yl)acetic acid
Similarity: 0.95
[ 156942-67-5 ]
(R)-2-Methoxy-2-(naphthalen-2-yl)acetic acid
Similarity: 0.95
[ 32174-46-2 ]
(R)-Methyl 2-methoxy-2-phenylacetate
Similarity: 0.93
[ 5394-87-6 ]
2-Isopropoxy-2-phenylacetic acid
Similarity: 0.98
[ 63450-88-4 ]
Sodium 2-methoxy-2-phenylacetate
Similarity: 0.98
[ 157134-51-5 ]
(S)-2-Methoxy-2-(naphthalen-2-yl)acetic acid
Similarity: 0.95
[ 156942-67-5 ]
(R)-2-Methoxy-2-(naphthalen-2-yl)acetic acid
Similarity: 0.95
[ 32174-46-2 ]
(R)-Methyl 2-methoxy-2-phenylacetate
Similarity: 0.93
[ 5394-87-6 ]
2-Isopropoxy-2-phenylacetic acid
Similarity: 0.98
[ 157134-51-5 ]
(S)-2-Methoxy-2-(naphthalen-2-yl)acetic acid
Similarity: 0.95
[ 156942-67-5 ]
(R)-2-Methoxy-2-(naphthalen-2-yl)acetic acid
Similarity: 0.95
[ 7322-88-5 ]
(S)-2-Acetoxy-2-phenylacetic acid
Similarity: 0.91
[ 51019-43-3 ]
(R)-2-Acetoxy-2-phenylacetic acid
Similarity: 0.91