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METHOD FOR THE STEREOSELECTIVE SYNTHESIS OF 3-SUBSTITUTED 2-THIOMETHYL PROPIONIC ACIDS
METHOD FOR THE STEREOSELECTIVE SYNTHESIS OF 3-SUBSTITUTED 2-THIOMETHYL PROPIONIC ACIDS
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机译:3-取代的2-硫代甲基丙酸的立体选择合成方法
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PCT No. PCT/EP93/02673 Sec. 371 Date May 15, 1995 Sec. 102(e) Date May 15, 1995 PCT Filed Sep. 30, 1993 PCT Pub. No. WO94/00789 PCT Pub. Date Apr. 14, 1994Process for the stereoselective synthesis of 3-substituted 2-thiomethylpropionic acids Compounds of the formula I IMAGE I in which R1 and R2 are as defined can be prepared stereoselectively by reaction of acrylic acid or derivatives thereof or propionic acid or derivatives thereof with a chiral auxiliary, reaction with a mercaptan, stereoselective alkylation and subsequent hydrolysis and oxidation.
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