作者:Douglas A. Klumpp、Manuel Garza、Andre Jones、Saray Mendoza
DOI:10.1021/jo990454i
日期:1999.9.1
(80-99%) by the reaction of piperidones (3d-h) with benzene and the Bronsted superacid, trifluoromethanesulfonic acid (CF(3)SO(3)H, TfOH). Tropinone (6) and quinuclidone (7) also react in good yields with benzene in TfOH to give the condensation products (13 and 14). Ketal and acetal derivatives also give condensation products (8 and 24) upon reaction with C(6)H(6) in TfOH. The conversion of 3g to 11 is
通过使哌啶酮(3d-h)与苯和布朗斯台德超强酸三氟甲磺酸(CF(3)SO(3)H)反应,可以制备出高至优异收率(80-99%)的二芳基哌啶(8-12), TfOH)。Tropinone(6)和quinuclidone(7)也可以与苯在TfOH中反应,得到缩合产物(13和14)。与C(6)H(6)在TfOH中反应时,缩酮和缩醛衍生物还会产生缩合产物(8和24)。3g转化为11对酸量和酸强度均敏感。提出了一种用于转换的调用机制的机制。