Switch in Stereoselectivity Caused by the Isocyanide Structure in the Rhodium-Catalyzed Silylimination of Alkynes
摘要:
The reaction of terminal alkynes with hydrosilanes and tert-alkyl isocyanides in the presence of Rh-4(CO)(12) gives (Z)-beta-silyl-alpha,beta-unsaturated imines in good yields. On the other hand, the use of aryl isocyanides in place of tert-alkyl isocyanides leads to the formation of E isomers.
Switch in Stereoselectivity Caused by the Isocyanide Structure in the Rhodium-Catalyzed Silylimination of Alkynes
摘要:
The reaction of terminal alkynes with hydrosilanes and tert-alkyl isocyanides in the presence of Rh-4(CO)(12) gives (Z)-beta-silyl-alpha,beta-unsaturated imines in good yields. On the other hand, the use of aryl isocyanides in place of tert-alkyl isocyanides leads to the formation of E isomers.
The reaction of terminal alkynes with hydrosilanes and tert-alkyl isocyanides in the presence of Rh-4(CO)(12) gives (Z)-beta-silyl-alpha,beta-unsaturated imines in good yields. On the other hand, the use of aryl isocyanides in place of tert-alkyl isocyanides leads to the formation of E isomers.