Titanium-Catalyzed [6π+2π]-Cycloaddition of Alkynes and Allenes to 7-Substituted 1,3,5-Cycloheptatrienes
作者:Vladimir A. D'yakonov、Gulnara N. Kadikova、Dmitry I. Kolokol'tsev、Ilfir R. Ramazanov、Usein M. Dzhemilev
DOI:10.1002/ejoc.201500442
日期:2015.7
5-cycloheptatrienes with alkynes and allenes, catalyzed by the two-component Ti(acac)2Cl2–Et2AlCl system, resulting in the formation of substituted bicyclo[4.2.1]nona-2,4-dienes and bicyclo[4.2.1]nona-2,4,7-trienes in up to 90 % yield, was accomplished. The structures of the obtained compounds were confirmed by X-ray diffraction and by 1H and 13C NMR spectroscopic analysis.
7-烷基(烯丙基,苯基)-1,3,5-环庚三烯与炔烃和丙二烯在双组分Ti(acac)2Cl2-Et2AlCl体系催化下反应生成取代双环[4.2.1 ]nona-2,4-二烯和双环[4.2.1]nona-2,4,7-三烯的产率高达 90%。所得化合物的结构通过X-射线衍射和1H和13C NMR光谱分析证实。