Ether-directed palladium(II)-catalysed aza-Claisen rearrangements: studies on the origin of the directing effect
作者:Andrew G. Jamieson、Andrew Sutherland
DOI:10.1016/j.tet.2006.12.067
日期:2007.3
Four new chiral δ-substituted allylic trichloroacetimidates have been synthesised to probe the origin of the high diastereoselectivity observed for the MOM-ether directed palladium(II)-catalysed aza-Claisenrearrangement. Rearrangement of these compounds has not only provided strong evidence for this directing effect but also that during the rearrangement both oxygen atoms from the MOM-ether are involved