A process is disclosed for the production of polyalkyl tetrahydronaphthalenes wherein a cyclialkylation reaction between an olefinic compound of the general formula
where R4, R5, R6 and R7 are independently defined and each is a substituent which does not interfere substantially with a Friedel-Crafts reaction, and a substituted benzene compound, is carried out in the presence of an alkyl halide or, in some embodiments, hydrogen halide, a Lewis acid, and a phase transfer agent. In some embodiments, the subject process is specifically carried out in the absence of elemental iodine. The subject process, which may be practiced in an unhalogenated hydrocarbon solvent, produces the desired compounds in a surprisingly high yield, with a surprisingly high selectivity to the desired product, and at relatively high rate of reaction, using better, more convenient or less expensive process methodology than many processes known heretofore.
本发明公开了一种生产聚烷基四氢
萘的工艺,其中通式如下的烯烃化合物发生环烷基化反应
其中 R4、R5、R6 和 R7 独立定义,且各自为不严重干扰 Friedel-Crafts 反应的取代基,和取代的苯化合物之间的环烷基化反应在烷基卤化物或(在某些实施例中)卤化氢、
路易斯酸和相转移剂存在下进行。在某些实施方案中,主体工艺具体是在没有
碘元素的情况下进行的。本发明的工艺可在非卤代烃溶剂中进行,与迄今已知的许多工艺相比,本发明的工艺方法能以更好、更方便或更低成本生产出所需的化合物,产率出奇地高,对所需产物的选择性出奇地高,反应速率出奇地高。