Synthesis of CF3-substituted 1,2,3,4-tetrahydroisoquinolines and 1,2,3,6-tetrahydropyridines
作者:I. Yu. Chernyshov、V. V. Levin、A. D. Dilman、P. A. Belyakov、M. I. Struchkova、V. A. Tartakovsky
DOI:10.1007/s11172-010-0362-2
日期:2010.11
A three-step method for the preparation of CF3-substituted 1,2,3,4-tetrahydroisoquino-lines and 1,2,3,6-tetrahydropyridines has been suggested. The first step includes alkylation of isoquinoline or 4-methylpyridine at the nitrogen atom with the formation of salts, which are involved into the reaction with Grignard reagent or lithium triethylborohydride to give enamines. The enamines undergo nucleophilic
已经提出了用于制备 CF3 取代的 1,2,3,4-四氢异喹啉和 1,2,3,6-四氢吡啶的三步法。第一步包括在氮原子上对异喹啉或 4-甲基吡啶进行烷基化并形成盐,这些盐与格氏试剂或三乙基硼氢化锂反应生成烯胺。在酸性条件下,在 Me3SiCF3 的作用下,烯胺发生亲核三氟甲基化。