3-Alkyl-4-thianones 4 (3-alkyl-thiacyclohexan-4-ones) can be conveniently prepared by the alkylation of 3-allyloxycarbonyl-4-thianone (1b) followed by deallyloxycarbonylation mediated by tetrakis (triphenylphosphine)palladium in the presence of morpholine. The corresponding sulphones 9, as well as 2,3-dialkyl 4-thianone derivatives 12 and 13 can be prepared by analogous procedures.
3- 烷基-4-
噻酮 4(3-烷基-
硫杂
环己烷-4-酮)可以通过 3-烯丙氧羰基-4-
噻酮(1b)的烷基化,然后在吗啉存在下,由四(
三苯基膦)
钯介导的脱烯丙氧羰基化反应方便地制备。相应的砜类化合物 9 以及 2,3-二烷基 4-
噻酮衍
生物 12 和 13 可通过类似的方法制备。