作者:Lucia D'Accolti、Cosimo Annese、Antonella Aresta、Caterina Fusco
DOI:10.1002/jhet.1839
日期:2014.9
Epoxides are essential building blocks in organic chemistry. The epoxidation of unsubstituted cyclic dienes 2, 3, 4 and triene 5 using dimethyldioxirane (1a) and its trifluoro analog 1b methyl(trifluoromethyl)dioxirane has been investigated. The excellent yields obtained (90–98%) are accompanied by outstandingly high diastereoselectivities (90–98%). Interpretation of results based upon the early idea
环氧是有机化学中必不可少的组成部分。或未取代的环的环氧化二烯类2,3,4和三烯5使用二甲基二(1A)和它的三氟模拟1B甲基(三氟甲基)二环氧乙烷进行了研究。获得的优异收率(90–98%)伴随着极高的非对映选择性(90–98%)。对结果的解释基于早期的观点,即极性基团可以通过偶极-偶极相互作用来指导二环氧乙烷的进攻,提供了一种可能的理论依据,以及更广义的力学观点。