Synthesis and reactivity of the 1,1-dilithio derivatives of alkyl phenyl sulfones and N,N-dimethyl methanesulfonamide
作者:A. Bongini、D. Savoia、A. Umani-Ronchi
DOI:10.1016/s0022-328x(00)89360-2
日期:1976.5
Alkyl phenyl sulfones Ia,b and N,N-dimethyl methanesulfonamide (Ic) are rapidly converted into their 1,1-dilithio salts IIa–c on reaction with n-butyllithium in THF—hexane. The nature of these new organometallic species was confirmed by deuteration and condensation with benzaldehyde. The gem-dimetallo derivatives Va–c and VIa, obtained from IIa–c by lithium—magnesium and lithium—boron exchange respectively
与正丁基锂在THF-己烷中反应后,烷基苯基砜Ia,b和N,N-二甲基甲磺酰胺(Ic)迅速转化为1,1-二硫代盐IIa-c。通过氘化和与苯甲醛缩合证实了这些新的有机金属物种的性质。分别通过锂-镁和锂-硼交换从IIa-c获得的宝石双金属衍生物Va-c和VIa与羰基化合物反应生成α,β-不饱和砜VIIa-c和相应的β-羟基砜VIIIa- C。