在2-或3-位带有电子释放取代基的1-烷基-2-芳酰基-3-芳基氮丙啶与取代的对亚硝基苯酚反应,生成3,5-二氢-2 H-吡咯并[3,4- d ]恶唑。硝酮,芳基和芳酰基亚胺作为次要产物的分离支持以两个连续的1,3-偶极加成来解释反应,其中第二个区域特异性加成是自催化的,随后是Paal-Knorr缩合反应。
One-step synthesis of 3,5-dihydro-2H-pyrrolo[3,4-d]oxazoles by reaction of p-nitrosophenols with 2-aroylaziridines
作者:J. W. Lown、M. H. Akhtar
DOI:10.1039/p19720001459
日期:——
Reaction of 1-alkyl-2-aroyl-3-arylaziridines, bearing electron-releasing substituents in the 2- or 3-positions, with substituted p-nitrosophenols give 3,5-dihydro-2H-pyrrolo[3,4-d]oxazoles. The isolation of nitrones and aryl and aroyl imines as secondary products supports the interpretation of the reaction in terms of two consecutive 1,3-dipolar additions, in which the second regiospecific addition
在2-或3-位带有电子释放取代基的1-烷基-2-芳酰基-3-芳基氮丙啶与取代的对亚硝基苯酚反应,生成3,5-二氢-2 H-吡咯并[3,4- d ]恶唑。硝酮,芳基和芳酰基亚胺作为次要产物的分离支持以两个连续的1,3-偶极加成来解释反应,其中第二个区域特异性加成是自催化的,随后是Paal-Knorr缩合反应。