Gallium metal mediated allylation of carbonyl compounds and imines under solvent-free conditions
作者:Philip C Andrews、Anna C Peatt、Colin L Raston
DOI:10.1016/j.tetlet.2003.10.188
日期:2004.1
Gallium metal is effective in mediating the allylation of various carbonyl compounds and imines under solvent-free conditions, with the application of sonic energy, affording the corresponding homoallylic alcohols and amines. The imines themselves were also prepared under solventless conditions in high yield, thereby establishing a two-step solvent-free synthesis of homoallylic amines. In comparison, indium metal produced a mixture of the desired homoallylic secondary amine and the bisallylated species via an iminium ion intermediate. (C) 2003 Elsevier Ltd. All rights reserved.