Medium-Sized Carbocycles by Samarium Diiodide-Induced Carbonyl−Alkene Cyclizations
摘要:
Intramolecular samarium diiodide-induced carbonyl-alkene or carbonyl-alkyne coupling reactions afforded without high dilution conditions 9- and 10-membered benzannulated carbocycles of type II and III in surprisingly good yields and stereoselectivities. A novel samarium diiodide-mediated cascade process leading to tricyclic compounds of type IV was also observed. Bisbenzannulated 10- and 11-membered carbocycles were prepared in very good yields.
Medium-Sized Carbocycles by Samarium Diiodide-Induced Carbonyl−Alkene Cyclizations
摘要:
Intramolecular samarium diiodide-induced carbonyl-alkene or carbonyl-alkyne coupling reactions afforded without high dilution conditions 9- and 10-membered benzannulated carbocycles of type II and III in surprisingly good yields and stereoselectivities. A novel samarium diiodide-mediated cascade process leading to tricyclic compounds of type IV was also observed. Bisbenzannulated 10- and 11-membered carbocycles were prepared in very good yields.
Medium-Sized Carbocycles by Samarium Diiodide-Induced Carbonyl−Alkene Cyclizations
作者:Jakub Saadi、Dieter Lentz、Hans-Ulrich Reissig
DOI:10.1021/ol901183h
日期:2009.8.6
Intramolecular samarium diiodide-induced carbonyl-alkene or carbonyl-alkyne coupling reactions afforded without high dilution conditions 9- and 10-membered benzannulated carbocycles of type II and III in surprisingly good yields and stereoselectivities. A novel samarium diiodide-mediated cascade process leading to tricyclic compounds of type IV was also observed. Bisbenzannulated 10- and 11-membered carbocycles were prepared in very good yields.