申请人:Husler Rinaldo
公开号:US20060241323A1
公开(公告)日:2006-10-26
The invention relates to a process for the preparation of a crystalline isomeric mixture of compounds of formulae (I) and (II) which process comprises the following steps: a) the slow addition of aluminium chloride, in portions, to a solution comprising 1,1,3-trimethyl-3-phenylindan and isobutyric acid halide in a suitable solvent at a reaction temperature of from −20° C. to 20° C., an isomeric mixture consisting of compounds of formulae (Ia) and (IIa) being obtained; b) enol chlorination of compounds (Ia) and (IIa), an isomeric mixture consisting of compounds of formulae (Ib) and (IIb) being obtained; c) hydrolysis of the chlorinated isomeric mixture from step b). The invention relates also to the preparation of the individual compounds (I) and (II).
本发明涉及一种制备式(I)和(II)化合物结晶异构体混合物的工艺,该工艺包括以下步骤: a) 在-20°C 至 20°C的反应温度下,将氯化铝分次缓慢加入到由 1,1,3-三甲基-3-苯基茚满和异丁酸卤化物在适当溶剂中形成的溶液中、得到由式 (Ia) 和 (IIa) 化合物组成的异构混合物; b) 对化合物 (Ia) 和 (IIa) 进行烯醇氯化反应,得到由式 (Ib) 和 (IIb) 化合物组成的异构混合物; c) 对来自步骤 b) 的氯化异构混合物进行水解。本发明还涉及单个化合物 (I) 和 (II) 的制备。