New method for generation of β-oxido carbenoid via ligand exchange reaction of sulfoxides: A versatile procedure for one-carbon homologation of carbonyl compounds
作者:Tsuyoshi Satoh、Norifumi Itoh、Kaoru Gengyo、Sae Takada、Naoyuki Asakawa、Yumi Yamani、Koji Yamakawa
DOI:10.1016/s0040-4020(01)89299-1
日期:1994.1
one-carbon homologation of carbonyl compounds is described. The method is based on the rearrangement of β-oxido carbenoid which is generated via the ligand exchange reaction of the sulfinyl group of α-chloro β-hydroxy sulfoxide with tert-butyllithium. Addition of the carbanion of aryl 1-chloroalkyl sulfoxides to carbonyl compounds gave the adducts in good yields. The β-oxido carbenoid rearrangement of the
描述了一种新的羰基化合物一碳同系化方法。该方法基于通过α-氯β-羟基亚砜的亚磺酰基与叔丁基锂的配体交换反应而产生的β-氧化类胡萝卜素的重排。将芳基1-氯烷基亚砜的碳负离子加到羰基化合物上,以高收率得到加合物。加合物的β-氧化类胡萝卜素重排得到具有α-烷基取代基的一碳同系羰基化合物。衍生自羰基化合物的加合物与氯甲基对甲苯基亚砜的类似反应产生了亚甲基插入的程序。还讨论了β-氧化类胡萝卜素重排的立体化学。