New Addition Reactions of Organometal Compounds with 4,4-Dimethyl-1,3-thiazole-5(4H)-thiones
作者:Junxing Shi、Heinz Heimgartner
DOI:10.1002/hlca.19960790206
日期:1996.3.20
Addition reactions of organometallic reagents with 4,4-disubstituted 1,3-thiazole-5(4H)-thiones were studied. Whereas the reactions with alkyllithium and alkyl Grignardreagents occurred in the thiophilic manner, the carbophilic addition was observed with allyllithium and allyl Grignardreagents. A radicalreactionmechanism is proposed for rationalizing these observations (Scheme 5). A radical cyclization