作者:Soichi Sakane、Junya Fujiwara、Keiji Maruoka、Hisashi Yamamoto
DOI:10.1016/s0040-4020(01)90598-8
日期:——
with organoaluminum reagents are executed to furnish limonene as a major product. Since the reaction of 1, 4, and 5 has proved to proceed much faster than that of neryl phenyl ether under the similar conditions, the rate acceleration is attributed to the novel metal-anchimeric assistance of the aluminum reagents bound with the neighboring hydroxyl group for effecting the generation of the allyl cation
描述了柠檬烯和双硼氢化萘的生物遗传型不对称合成。作为当前不对称合成的模型研究,对邻苯二酚,联苯酚和联萘酚单烯丙基醚1、4和5与有机铝试剂的环化反应以柠檬烯为主要产品。由于在相似的条件下1、4和5的反应已被证明比神经烷基苯基醚的反应快得多,因此速率加速归因于与邻羟基键合的铝试剂的新型金属-氨基酸辅助作用。影响烯丙基阳离子的产生。在修饰的铝试剂9处理后,这种对映异构效应可用于(R)-(+)-1,1'-联-2-萘酚单戊醚(8)的对映选择性环化,以生产具有高光学纯度(77%)的li烯。 ee)。