作者:Rolf Carlson、Hanna Gautun、Andreas Westerlund
DOI:10.1002/1615-4169(200201)344:1<57::aid-adsc57>3.0.co;2-0
日期:2002.1
and (B) stoichiometric amounts of the reactants and a catalytic amount of Nafion®-TMS were heated to 90–100 °C in the absence of solvent. The following ketones have been tested: 2-bromo-1-phenyl-1-ethanone, 2-bromo-cyclopentenone, 3-bromo-3-methyl-2-butanone, 3-chloro-3-methyl-2-butanone, 1-bromo-3,3-dimethyl-2-butanone, 1-chloro-3,3-dimethyl-2-butanone, 2-bromocyclohexanone, 2-chloro-1-cyclohexyl-1-ethanone
提出了确定卤代酮合成乙缩醛的方法的范围和局限性的研究。该方法使用1,2-双(三甲基硅氧基)乙烷,BTSE,如试剂和Nafion ® -TMS作为催化剂。两个过程都进行了测试:(A)化学计量的量的卤代酮和BTSE和Nafion的催化量的® -TMS物加热至回流的氯仿溶液中,和(B)的化学计量量的反应物和Nafion的催化量的®在没有溶剂的情况下,将-TMS加热至90–100°C。已测试以下酮:2-溴-1-苯基-1-乙酮,2-溴-环戊烯酮,3-溴-3-甲基-2-丁酮,3-氯-3-甲基-2-丁酮,1 -溴-3,3-二甲基-2-丁酮,1-氯-3,3-二甲基-2-丁酮,2-溴环己酮,2-氯-1-环己基-1-乙酮,1,1-二溴-3 ,3-二甲基-2-丁酮,1,3-二溴-3-甲基-2-丁酮,1,3-二溴-2-丁酮,1,3-二溴-2-丙酮,2-氯-1-苯基-1-乙酮和内-2-溴樟脑。除内标外,产率在57–