Studies toward the Photochemical Synthesis of Functionalized [5]- and [6]Carbohelicenes
作者:Morwenna S. M. Pearson、David R. Carbery
DOI:10.1021/jo900785k
日期:2009.8.7
An efficient route to nonsymmetrical helical menthyl esters by means of an oxidative photocyclization reaction of dissymmetric bis-stilbenes is reported. The developed route allows the introduction of functionality on rings A, E, or F, and the influence of the substituent pattern on the photochemical reaction has been examined. Diastereoselectivity is observed when a double chiral induction strategy
据报道,通过不对称双-对-苯乙烯类化合物的氧化光环化反应,可获得不对称螺旋薄荷基酯的有效途径。发达的路线允许在环A,E或F上引入官能团,并且已经研究了取代基图案对光化学反应的影响。当使用以70:30的异构体比率合成的二薄荷基螺旋烯酯进行双重手性诱导策略时,观察到非对映选择性。