摘要:
Single enantionmers of compounds of formula (B), in either the cis or trans configuration, wherein R1 and R2 are as defined herein, can be separated from enantiomeric mixtures thereof by reacting the compound with an acid to produce a conglomerate salt that has the following characteristics: the IR spectrum of the salt of the racemic compound, a 1:1 mixture of (−) and (+) crystals, is identical to that of the each of the single enantiomer, and the salt of the racemic compound has a melting point lower that that of either single enantiomer. The conglomerate salt is then separated by preferential crystallization.
摘要:
There is provided a method for resolving a compound of formula III, in the cis configuration: There is also provided a process for producing optically active compound of formula I or II: wherein: R1, R2, R3 are as defined herein, the method and process involving the production, recovery and conversion of diastereomeric salts.
摘要翻译:提供了以顺式构型分解式III化合物的方法:还提供了制备式I或II的光学活性化合物的方法:其中:R 1,R SUB R 2,R 3,R 3和R 3如本文所定义,涉及非对映异构体盐的生产,回收和转化的方法和方法。