Tin(II) complexes prepared by treatment of SnCl2or Sn(SR)2 with appropriate amounts of RSH and Et3N appear to be the best reducing agents for azides (to amines) reported so far. These tin(II) complexes also reduce primary and secondary aliphatic nitro compounds to oximes, usually within minutes at r.t. or hours in cold, and tertiary aliphatic as well as aromatic nitro compounds to afford the corresponding
Reduction of Azides to Amines Mediated by Tin Bis(1,2-benzenedithiolate)
作者:Imma Bosch、Anna M. Costa、Manuel Martín、Fèlix Urpí、Jaume Vilarrasa
DOI:10.1021/ol991359z
日期:2000.2.1
[reaction: see text] A procedure for the conversion of azides to amines, which uses NaBH4 and catalytic amounts of tin(IV) 1,2-benzenedithiolate, is disclosed. Primary, secondary, tertiary, aromatic, and heteroaromatic azides are reduced in excellent yields under very mild conditions.