A New and Effective Synthetic Method for the Preparation of the Esters, Peptides, and Lactones Using 3-(5-Nitro-2-oxo-1,2-dihydro-1-pyridyl)-1,2-benzisothiazole 1,1-Dioxide. Synthesis of (±)-(E)-8-Dodecen-11-olide, Recifeiolide

Abstract 3-(5-Nitro-2-oxo-1,2-dihydro-1-pyridyl)-1,2-benzisothiazole 1,1-dioxide(BID-NPy), readily prepared from 3-chloro-1,2-benzisothiazole 1,1-dioxide and 5-nitro-2-pyridone, proved to be a very useful condensing reagent. A variety of esters, dipeptides, and lactones were obtained in excellent yields. Furthermore, BID-NPy was successfully employed for the lactonization step in a new synthesis of a naturally occurring (±)-(E)-8-dodecen-11-olide, recifeiolide.