Brönsted and Lewis acid catalysis of XY–ZH cycloadditions
作者:R. Grigg、H. Q. N. Gunaratne
DOI:10.1039/c39820000384
日期:——
Cycloadditions of arylidene imdines of methyl phenylglycinate show substantial rate enhancement in the presence of Brönsted and Lewisacids; for Brönstedacids the rate is related to the pKa of the acid, whilst for the Lewisacids studied the rate acceleration decreased in the order Zn(OAc)2 > AgOAc > LiOAc > Mg(OAc)2.
在布朗斯台德和路易斯酸的存在下,苯基甘氨酸甲酯的亚芳基亚胺的环加成反应显示出显着的速率增加。对于布朗斯台德酸,速率与该酸的p K a有关,而对于路易斯酸,所研究的速率加速以Zn(OAc)2 > AgOAc> LiOAc> Mg(OAc)2的顺序降低。
Grigg, R., Bulletin des Societes Chimiques Belges, 1984, vol. 93, # 7, p. 593 - 604