Reactions of 2-(α-Haloalkyl)thiiranes with nucleophilic reagents: V. Reactions of 2-(α-Chloroalkyl)thiiranes with organolithium compounds
作者:A. A. Tomashevskii、V. V. Sokolov、A. A. Potekhin
DOI:10.1134/s1070428010120080
日期:2010.12
corresponding allyl sulfides. The reactions of diastereoisomeric erythro- and threo-2-(1-chloroethyl)thiiranes with phenyllithium were stereospecific, and they afforded (E)- and (Z)-1-phenylsulfanylbut-2-enes, respectively. 3-Chloromethyl-2,2-dimethylthiirane and phenyllithium gave rise to a mixture of 3-methyl-3-phenylsulfanylbut-1-ene and 3-methyl-1-phenylsulfanylbut-2-ene. The reactions of 2-chloromethylthiiranes
2-(α-卤代烷基)硫烷与甲基,丁基和苯基锂反应,得到相应的烯丙基硫化物。非对映异构的赤-和苏-2-(1-氯乙基)硫烷与苯基锂的反应是立体定向的,它们分别提供(E)-和(Z)-1-苯基硫烷基丁-2-烯。3-氯甲基-2,2-二甲基硫杂环丁烷和苯基锂生成3-甲基-3-苯基硫烷基丁-1-烯和3-甲基-1-苯基硫烷基丁-2-烯的混合物。在催化量的碘化亚铜(I)(10 mol%)存在下,2-氯甲基噻喃与苯基锂和甲基锂的反应导致形成取代的噻喃作为主要产物。讨论了观察到的转化的机制。