Solvent-Free Reaction of Some 1,2-Diaza-1,3-butadienes with Phosphites: Environmentally Friendly Access to New Diazaphospholes and <i>E</i>-Hydrazonophosphonates
作者:Orazio A. Attanasi、Graziano Baccolini、Carla Boga、Lucia De Crescentini、Paolino Filippone、Fabio Mantellini
DOI:10.1021/jo050242n
日期:2005.5.1
article describes the reaction between 1,2-diaza-1,3-butadienes and trialkyl phosphites, under an atmosphere of nitrogen and under solvent-free conditions, to give alkyl 3,3-dialkoxy-2H-1,2,3λ5-diazaphosphole-4-carboxylates that, in turn, are converted into corresponding E-hydrazonophosphonates by treatment with THF:water (95:5). These latter compounds are obtained directly by the reaction of 1,2-diaza-1
本文描述了1,2-二氮杂1,3,3-丁二烯与亚磷酸三烷基酯在氮气氛下和无溶剂条件下的反应,得到烷基3,3-二烷氧基-2 H -1,2, 3λ 5,反过来,被转换成相应的-diazaphosphole -4-羧酸ë -hydrazonophosphonates通过用THF:水(95:5)。后一种化合物是在空气存在下,通过1,2-二氮杂-1,3-丁二烯与亚磷酸三烷基酯的反应直接获得的。这些化合物可用于进一步制备(5-甲基-3-氧代-2,3-二氢-1 H -4-吡唑基)膦酸二烷基酯和2-二烷氧基磷酰基-1,2,3-噻二唑。