Synthesis of 1-C-(tetra-O-acetyl-β-d-galactopyranosyl)-2,3-diiodo-1-propene and its reaction with primary amines
摘要:
Iodination of 1-C-(tetra-O-acetyl-beta-D-galactopyranosyl)allene affords an E/Z-mixture of 1-C-(tetra-O-acetyl-beta-D-galactopyranosyl)-2,3-diiodo-1-propene. S(N)2 displacement of the allylic iodide with primary amines affords an E/Z-mixture of allylic amines under a variety of conditions. Due to its experimental simplicity and low cost of reagents, this procedure may find wide use in the laboratory for functionalization of sugar allenes. (C) 2009 Elsevier Ltd. All rights reserved.