Synthesis of 2,3 and 4,5-Dihydro-hydroxy-isoxazoles and Isoxazoles Under Different pH Conditions
作者:Virginie Andrzejak、Regis Millet、Jamal Bakali、Abdelhalim Guelzim、Sebastien Gluszok、Philippe Chavatte、Jean-Paul Bonte、Claude Vaccher、Emmanuelle Lipka
DOI:10.2174/157017810790533922
日期:2010.1.1
Reaction between aryl 1,3-diketoesters 2a-e and hydroxylamine hydrochloride has been investigated under different experimental conditions. Whereas acid conditions gave principally 3,5-isoxazole esters (3a-e), reactions under neutral and basic conditions led to different 4,5 and 2,3-dihydro-hydroxy-isoxazoles 4a-e and 5a-e.
在不同实验条件下,研究了芳基1,3-二酮酯2a-e与盐酸羟胺的反应。酸性条件下主要生成3,5-异噁唑酯(3a-e),而中性和碱性条件下的反应则导致不同的4,5和2,3-二氢-羟基-异噁唑(4a-e和5a-e)。