Cyclopropanation versus carbon–hydrogen insertion. The influences of substrate and catalyst on selectivity
作者:Michael P Doyle、Iain M Phillips
DOI:10.1016/s0040-4039(01)00408-7
日期:2001.4
Reactions of diazoacetates with varying linkages from the diazo-carbon to a vinyl group, catalyzed by chiral copper(I) and rhodium(II) compounds, were examined for selectivity in their intramolecular reactions. Bis-oxazoline-ligated copper(I) has advantages for cyclopropanation that form medium-to-large rings. Dirhodium(II) carboxamidates have advantages for small-ring-fused cyclopropane compounds
在手性铜(I)和铑(II)化合物的催化下,研究了重氮乙酸盐与重氮碳原子与乙烯基之间的键变化的反应在分子内反应中的选择性。连接双恶唑啉的铜(I)具有形成中到大环的环丙烷化优势。羧酸氨基甲酸二乙酯(Dirhodium(II)boxboxamidates)对于小环稠合的环丙烷化合物和碳氢插入具有优势。