Conversion of. beta.-amino esters to. beta.-lactams via tin (II) amides

WB Wang, EJ Roskamp

Index: Wang; Roskamp Journal of the American Chemical Society, 1993 , vol. 115, # 21 p. 9417 - 9420

Full Text: HTML

Citation Number: 28

Abstract

Abstract: Addition of Sn [N (TMS) 2] 2 to@-amino esters with sterically nondemanding substituents at C3 or on nitrogen gave@-lactams in 76100% yield. More sterically demanding@-amino esters could be converted to@-lactams in excellent yield using unsymmetrical tin (I1) amide reagents which were prepared in situ. Optimal results for the in situ procedure involved addition of Sn [N (TMS) 2] 2 to a@-amino ester, followed by ...