Selectivity between deprotonation and attack on tellurium in the reaction of 1,4-thiatellurins with strongly basic reagents
作者:H.J.M. Schoufs、A. Maercker、L. Brandsma
DOI:10.1016/0022-328x(92)80184-y
日期:1992.12
Reaction of 1,4-thiatellurin and some of its alkyl derivatives with n-butyllithium in tetrahydrofuran gives Z,Z-2,2′-dilithiodivinyl sulfide or alkyl derivatives and dibutyl telluride. With lithium diisopropylamide in tetrahydrofuran, in the case of 3,5′-dialkyl-1,4-thiatellurins, deprotonation with concomitant ring opening is the main reaction.
1,4-硫杂尿嘧啶及其某些烷基衍生物与正丁基锂在四氢呋喃中的反应生成Z,Z -2,2'-二硫代二乙烯基硫化物或烷基衍生物和碲化二丁基。在3,5'-二烷基-1,4-硫递灵中,在四氢呋喃中使用二异丙基氨基化锂,伴随着开环的去质子化是主要反应。