The ring transformation of 1,2,3-triazines.
作者:Takashi ITOH、Mamiko OKADA、Kazuhiro NAGATA、Kentaro YAMAGUCHI、Akio OHSAWA
DOI:10.1248/cpb.38.2108
日期:——
Monocyclic 1, 2, 3-triazines reacted with electron rich dienophiles to give pyridines and pyridazines. 4, 6-Disubstituted 1, 2, 3-triazine was denitrogenated to the azete intermediate, which afforded isomeric pyridines. 2, 5-Dihydrotriazines were oxidized by m-chloroperbenzoic acid to give 1, 2, 3-triazoles. Ring transformations of other triazine derivatives are also reported.
富电子的双烯亲电试剂与单环1, 2, 3-三嗪反应生成吡啶和吡啶嗪。4, 6-二取代的1, 2, 3-三嗪经过脱氮作用生成偶氮中间体,进而得到异构吡啶。2, 5-二氢三嗪被间氯过氧苯甲酸氧化生成1, 2, 3-三氮唑。还报道了其他三嗪衍生物的环转换反应。