Rhodium-catalyzed CC coupling reactions involving ring opening of strained molecules
作者:Gian Paolo Chiusoli、Mirco Costa、Luca Melli
DOI:10.1016/0022-328x(88)87098-0
日期:1988.12
intramolecular aromatic electrophilic substitution, leading to indene derivatives, can be obtained. Aromatic substitution can also occur in a sequential process, involving ring opening, 3-butenoic acid addition, leading to linear and branched isomeric complexes, and selective formation of a benzocycloheptene derivative from the branched isomer. The regioselectivity of 3-butenoic acid insertion is contrasted
使用二苯基亚甲基环丙烷作为模型,研究了铑催化的CC偶联反应,涉及应变分子的开环。已经确定,随着铑控制开环过程,活化的烯烃可以反应形成开链不饱和化合物。在酸的存在下,底物的质子化与烯烃的引入竞争,并且可以获得分子内的芳族亲电取代,从而导致茚衍生物。芳族取代也可以在依次过程中发生,包括开环,3-丁烯酸加成,导致线性和分支的异构体络合物,以及由分支的异构体选择性地形成苯并环庚烯衍生物。