Kinetic Resolution of Racemic α-Arylalkanoic Acids with Achiral Alcohols via the Asymmetric Esterification Using Carboxylic Anhydrides and Acyl-Transfer Catalysts

被引:109
|
作者
Shiina, Isamu [1 ]
Nakata, Kenya [1 ]
Ono, Keisuke [1 ]
Onda, Yu-suke [1 ]
Itagak, Makoto [2 ]
机构
[1] Tokyo Univ Sci, Fac Sci, Dept Appl Chem, Shinjuku Ku, Tokyo 1628601, Japan
[2] Sumitomo Chem Co Ltd, Organ Synth Res Lab, Konohana Ku, Osaka 5548558, Japan
关键词
ENANTIOSELECTIVE ADDITION; TETRAMISOLE DERIVATIVES; BENZOIC ANHYDRIDES; KETENES; BENZOTETRAMISOLE; LACTONES; ESTERS; ARYL;
D O I
10.1021/ja103490h
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
A variety of optically active carboxylic esters are produced by the kinetic resolution of racemic alpha-substituted carboxylic acids using achiral alcohols, aromatic or aliphatic carboxylic anhydrides, and chiral acyl-transfer catalysts. The combination of 4-methoxybenzoic anhydride (PMBA) or pivalic anhydride with the modified benzotetramisole-type catalyst ((S)-beta-Np-BTM) is the most effective for promotion of the enantioselective coupling reaction between racemic carboxylic acids and a novel nucleophile, bis(alpha-naphthyl)methanol, to give the corresponding esters with high ee's. This protocol was successfully applied to the production of nonracemic nonsteroidal anti-inflammatory drugs from racemic compounds utilizing the transacylation process to generate the mixed anhydrides from the acid components with the suitable carboxylic anhydrides.
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页码:11629 / 11641
页数:13
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