ELECTROGENERATED ACID AS AN EFFICIENT CATALYST FOR CYANATION OF ACETALS WITH TRIMETHYLSILYL CYANIDE
作者:Sigeru Torii、Tsutomu Inokuchi、Tohru Kobayashi
DOI:10.1246/cl.1984.897
日期:1984.6.5
A facile cyanation of acetals with trimethylsilyl cyanide, giving the corresponding α-alkoxyalkanenitriles, is achieved by using an electrogenerated acid as an acid-catalyst.
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.