From 3-chloromethyl-1,2,4-triazine 4-oxides to various substituted pyridines and 1,2,4-triazines
作者:V. N. Kozhevnikov、D. N. Kozhevnikov、O. V. Shabunina、N. N. Kataeva、S. A. Yushchuk、V. L. Rusinov、O. N. Chupakhin
DOI:10.1007/s11172-006-0095-4
日期:2005.9
efficient strategy for the synthesis of new pyridine and 1,2,4-triazine derivatives starting from available 6-aryl-3-chloromethyl-1,2,4-triazine 4-oxides was proposed. The deoxygenative nucleophilic hydrogen substitution in the triazine-oxide ring, nucleophilic substitution of the chlorine atom in the side chain, and transformations of the 1,2,4-triazine ring into the pyridine ring via the inverse-electron-demand
提出了一种从可用的 6-芳基-3-氯甲基-1,2,4-三嗪 4-氧化物合成新吡啶和 1,2,4-三嗪衍生物的有效策略。三嗪-氧化物环中的脱氧亲核氢取代,侧链中氯原子的亲核取代,以及1,2,4-三嗪环通过逆电子需求Diels-Alder反应转变为吡啶环, 以不同的顺序使用,是一种相当灵活的工具,用于标题杂环的功能化。氰化物阴离子、吲哚、苯硫酚、胺和三苯基膦用作亲核试剂。将吲哚残基直接引入 1,2,