Three Chloro(trifluoromethyl)pyridines as Model Substrates for Regioexhaustive Functionalization
作者:Fabrice Cottet、Manfred Schlosser
DOI:10.1002/ejoc.200400066
日期:2004.9
As a further test of the concept of regioexhaustive functionalization, 2-chloro-6-(trifluoromethyl)pyridine, 2-chloro-5-(trifluoromethyl)pyridine and 3-chloro-4-(trifluoromethyl)pyridine were each converted into the three possible carboxylic acids. This was achieved by employing several, but not all of the organometallic qtoolbox methodsq; transformation of a more basic organometallic species into
作为对区域穷举功能化概念的进一步测试,2-氯-6-(三氟甲基)吡啶、2-氯-5-(三氟甲基)吡啶和3-氯-4-(三氟甲基)吡啶分别转化为三种可能的羧酸。这是通过使用几种(但不是全部)有机金属 qtoolbox 方法实现的;通过金属转移平衡、用 N,N-二异丙基氨基锂或 2,2,6,6-四甲基哌啶锂进行位点区分去质子化、区域发散碘迁移和酸性位置的空间筛选,将碱性更强的有机金属物质转化为碱性更低的异构体由庞大的三烷基甲硅烷基组成。[在 SciFinder (R) 上]