Highly enantioselective chiral aminolysis of cis-4-cyclo-hexen-1,2-ylenebis(carboxylic acid) anhydride has been performed by employing sodium salt of 4(R)-isopropyl-1,3-thiazolidine-2-thione in THF-DMSO. Other chiral aminolyses of prochiral σ-symmetric dicarboxylic anhydrides such as cis-cyclobutan-1,2-ylenebis(carboxylic acid) anhydride, meso-2,4-dimethylglutaric anhydride, and 3- [(t-butyldimethylsilyl) oxy] glutaric anhydride were similarly investigated.
已采用 4(R)-异丙基-1,3-
噻唑烷-2-
硫酮的钠盐,在 THF-
DMSO 中对顺-4-
环己烯-1,2-ylenebis(
羧酸)酸酐进行了高度对映选择性的手性
氨基醇ysis。其他对称 σ-symmetric 二
羧酸酸酐的手性
氨基醇ysis,如顺-
环丁烷-1,2-ylenebis(
羧酸)酸酐、meso-2,4-二甲基
戊二酸酸酐和 3-[(t-丁基二甲基
硅烷)氧]
戊二酸酸酐也进行了类似的研究。