Lithium–potassium superbases as key reagents for the base-catalysed isomerisation of some terpenoids
作者:Annamaria Deagostino、Paolo Balma Tivola、Cristina Prandi、Paolo Venturello
DOI:10.1039/b106906c
日期:2001.11.1
Some representative monoterpenes have been isomerised under the influence of Schlosser's lithium–potassium mixed superbases, promoting β-elimination reactions. The results are compared with those obtained with butyllithium and LDA. Different selectivities and different reaction yields are achieved as a function of the base employed. These results confirm the particular reactivity of bimetallic reagents
一些代表 单萜在Schlosser的锂-钾混合超碱的影响下已被异构化,促进了β-消除反应。将结果与使用丁基锂 和 LDA。根据所使用的碱,实现了不同的选择性和不同的反应产率。这些结果证实了双金属试剂的特殊反应性。在本文中提出,观察到的选择性可能取决于底物的构象特征,有机金属试剂的强度以及消除反应的空间要求。