[(tert-Butyldimethylsilyl)oxy]methanethiol and [(tert-butyldiphenylsilyl)oxy]methanethiol—nucleophilic protected H2S equivalents
摘要:
[(tert-Butyldimethylsilypoxy]methanethiol [HSCH2OSiMe2Bu-t] is a nucleophilic reagent for introduction of a protected bivalent sulfur; this reagent is complementary to the electrophilic reagent p-MeC6H4SO2SCH2OSiMe2Bu-t. The thiol is prepared by the action of HSLi on tert-butyl(chloromethoxy) dimethylsilane [CICH2OSiMe2Bu-t] and it reacts with alkyl bromides to give protected thiols. (C) 2015 Elsevier Ltd. All rights reserved.
[(tert-Butyldimethylsilyl)oxy]methanethiol and [(tert-butyldiphenylsilyl)oxy]methanethiol—nucleophilic protected H2S equivalents
摘要:
[(tert-Butyldimethylsilypoxy]methanethiol [HSCH2OSiMe2Bu-t] is a nucleophilic reagent for introduction of a protected bivalent sulfur; this reagent is complementary to the electrophilic reagent p-MeC6H4SO2SCH2OSiMe2Bu-t. The thiol is prepared by the action of HSLi on tert-butyl(chloromethoxy) dimethylsilane [CICH2OSiMe2Bu-t] and it reacts with alkyl bromides to give protected thiols. (C) 2015 Elsevier Ltd. All rights reserved.
Totalsynthesis of bongkrekicacid, an important apoptosis inhibitor, has been accomplished. The strategy includes inexpensive starting materials, asymmetric alkylation, anionic allyl coupling and oxidative manipulations. This process would provide a sufficient amount of bongkrekicacid and its analogues.