Amino chloro stannylenes have been prepared in situ using two differen
t procedures: (1) reaction of an amine hydrochloride with Sn[N(TMS)2]2
; and (2) reaction of a tin(II) amide with tin(II) chloride. These rea
gents are useful for the conversion of primary, alpha,beta-unsaturated
, or aromatic esters to amides.