Boron Tribromide-Catalyzed Rearrangement of 7,7-Diphenylhydromorphone to 6,7-Diphenylmorphine: A Novel Conversion of Ketones to Allylic Alcohols
摘要:
A novel boron tribromide-catalyzed rearrangement of ketones to allylic alcohols was discovered in the 7-phenylmorphinan-6-one system. The reaction involved the stereospecific migration of an axial 7 beta-phenyl (or a hydrogen) to the C-6 carbonyl carbon, followed by the elimination of the H-8 proton leading to the generation of allylic alcohols. A possible mechanistic pathway for this rearrangement is discussed.
Boron Tribromide-Catalyzed Rearrangement of 7,7-Diphenylhydromorphone to 6,7-Diphenylmorphine: A Novel Conversion of Ketones to Allylic Alcohols
摘要:
A novel boron tribromide-catalyzed rearrangement of ketones to allylic alcohols was discovered in the 7-phenylmorphinan-6-one system. The reaction involved the stereospecific migration of an axial 7 beta-phenyl (or a hydrogen) to the C-6 carbonyl carbon, followed by the elimination of the H-8 proton leading to the generation of allylic alcohols. A possible mechanistic pathway for this rearrangement is discussed.
Boron Tribromide-Catalyzed Rearrangement of 7,7-Diphenylhydromorphone to 6,7-Diphenylmorphine: A Novel Conversion of Ketones to Allylic Alcohols
作者:Peng Gao、Philip S. Portoghese
DOI:10.1021/jo951526i
日期:1996.1.1
A novel boron tribromide-catalyzed rearrangement of ketones to allylic alcohols was discovered in the 7-phenylmorphinan-6-one system. The reaction involved the stereospecific migration of an axial 7 beta-phenyl (or a hydrogen) to the C-6 carbonyl carbon, followed by the elimination of the H-8 proton leading to the generation of allylic alcohols. A possible mechanistic pathway for this rearrangement is discussed.