Zl. Tang et Jc. Pelletier, PREPARATION OF AMIDES FROM ACIDS AND RESIN-BOUND AZIDES - SUPPRESSIONOF INTRAMOLECULAR LACTAM FORMATION, Tetrahedron letters, 39(27), 1998, pp. 4773-4776
A new method for the formation of amides on solid phase has been devel
oped. The procedure involves the reaction between activated acids in s
olution and resin bound iminophosphoranes generated from the correspon
ding azides and tributylphosphine. The method is particularly attracti
ve when starting from delta azido acids since amides can form without
internal cyclization to the lactam, (C) 1998 Elsevier Science Ltd. All
rights reserved.