C-phosphorylation of 1,2,4-triazoles with phosphorus(III) halides. Synthesis of 4,5-dihydrobenzo[e][1,2,4]triazolo[5,1-c][1,4,2]diazaphosphinine derivatives
作者:Evgenij V. Zarudnitskii、Vladimir V. Ivanov、Alexandr A. Yurchenko、Alexandr M. Pinchuk、Andrej A. Tolmachev
DOI:10.1002/hc.10010
日期:——
Phosphorylation of 4- and 1-substituted 1,2,4-triazoles with PCl3, PhPCl2, Ph2PCl, and (Et2N)2 PCl was carried out. A novel phosphorus-containing condensed heterocyclic system (18, 23) was constructed by the reactions of 2-(1H-1,2,4-triazol-1-yl)-1-(4-chlorophenylcarboxamido)-5-trifluoromethylbenzene with PBr3 and PhPBr2. Treatment of the bromophosphonite 18 with an excess of morpholine in the presence
用 PCl3、PhPCl2、Ph2PCl 和 (Et2N)2 PCl 对 4-和 1-取代的 1,2,4-三唑进行磷酸化。2-(1H-1,2,4-三唑-1-基)-1-(4-氯苯基甲酰胺基)-5-三氟甲基苯与PBr3反应构建了新型含磷稠合杂环体系(18, 23)和 PhPBr2。在硫的存在下用过量的吗啉处理溴亚膦酸酯 18 导致二氮杂膦开环并提供官能化的 1H-1,2,4-三唑-5-基膦酸衍生物 21 和 22。© 2002 Wiley Periodicals, Inc.杂原子化学 13:146–152, 2002; 在线发表于 Wiley Interscience (www.interscience.wiley.com)。DOI 10.1002/hc.10010