作者:Masanori Ikeda、Tsuneo Hirano、Teiji Tsuruta
DOI:10.1016/s0040-4020(01)97361-2
日期:——
Aluminum alkyl-tertiary amine complex was found to induce the catalytic dimerization of methyl crotonate (MCr) to dimethyl 2-methylpent-4-ene-1,3-dicarboxylate (1) and dimethyl 2-methylpent-cis-3-ene-1,3-dicarboxylate (2). The of the γ-hydrogen of the MCr molecule. Dimer 2 is formed through the isomerization of dimer 1. The complex of AlR3 with a bidentate ligand, sparteine, produces dimer 1, selectively
发现烷基叔胺铝络合物可将巴豆酸甲酯(MCr)催化二聚为2-甲基戊-4-烯-1,3-二羧酸二甲酯(1)和2-甲基戊-4-顺式-3-ene-1二甲基,3-二羧酸盐(2)。MCr分子的γ-氢原子。二聚体2通过二聚体1的异构化形成。AlR 3与二齿配体sparteine的复合物选择性地产生二聚体1。复为AlR的3与单齿配体的净3,在另一方面,引起的二聚体异构化1到顺式的二聚体-形式2。烷基铝叔胺配合物的配位数似乎控制着MCr的二聚机理。