Lewis Acid Promoted Phenylseleno Group Transfer Tandem Radical Cyclization Reactions
作者:Dan Yang、Qiang Gao、On-Yi Lee
DOI:10.1021/ol025750n
日期:2002.4.1
[reaction: see text] A new Lewis acid promoted phenylseleno group transfer tandem radical cyclization method was developed. In the presence of Lewis acids such as Yb(OTf)3 or Mg(ClO4)2, under photolysis condition at low temperature (-45 degrees C), various unsaturated alpha-phenylseleno beta-keto amides underwent radical cyclization reactions to give monocyclic or bicyclic products in a highly efficient