Fe(III)-Catalyzed Aerobic Intramolecular N–N Coupling of Aliphatic Azides with Amines
摘要:
An Fe(III)-catalyzed intramolecular N-N coupling of aliphatic azidoamines that forms diverse five-and six-membered semisaturated diazoheterocycles using air as an oxidant is reported, providing an alternative to hydrazine-based methods. Mechanistic studies suggest that a N-radical induced intramolecular homolytic substitution (S(H)2) is involved in ring closure. The power of this N-N bond-forming method is also demonstrated by using it as the final step in a total synthesis of (-)-newbouldine.
Organocatalytic Conjugate Addition of Azide Ion to α,β‐Unsaturated Aldehydes
作者:Sung‐Gon Kim、Tae‐Ho Park
DOI:10.1080/00397910601168306
日期:2007.3.1
Abstract An efficient and simple amine‐catatalyzed azide conjugateaddition to α,β‐unsaturatedaldehydes has been developed. In the presence of a catalytic amount of tertiary amine with a 1:1 mixture of NaN3 and 37% HCl in CH2Cl2, α,β‐unsaturatedaldehydes provided β‐azido aldehydes, which could be transformed into 1,3‐amino alcohols.