Reaction of chlorosulphonyl isocyanate with ethyl 4,6-di-O-acetyl-2,3-dideoxy-α-D-erythro-hex-2-enopyranoside: a reinvestigation

Abstract

The minor products of the reaction of chlorosulphonyl isocyanate with a hex-2-enopyranoside in ether and in acetonitrile include a 3-alkoxycarbonylamino-3-deoxy-allal, 2-(D-glycero-1,2-diacetoxyethyl)furan, two hex-2-enopyranosylamines, and two C–C linked disaccharide derivatives. Reaction mechanisms are discussed.