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。
Reaction of 3-aroylaziridines with diphenylcyclopropenone. Synthesis and properties of novel 4-aroyl-4-oxazolines
作者:J. W. Lown、R. K. Smalley、G. Dallas、T. W. Maloney
DOI:10.1139/v70-014
日期:1970.1.1
3-Aroylaziridines and 3-acylaziridines react with diphenylcyclopropenone with the formation of novel 4-aroyl-4-oxazolines and 4-acyl-4-oxazolines respectively. The unusual physical and chemical properties of these reactive heterocycles are discussed.
1,3-Dipolar cycloaddition of nitrosonaphthols to 3-aroylazindines. Novel syntheses of substituted naphtho[1,2-<i>d</i>]oxazoles and naphtho[2,1-<i>d</i>]oxazoles
作者:J. W. Lown、J. P. Moser
DOI:10.1139/v70-371
日期:1970.7.15
A series of 3-aroyl-2-arylaziridines underwent 1,3-dipolar cycloadditions in both orientations to the nitrogen–oxygen bond of 1-nitroso-2-naphthol. Spontaneous 1,3-cleavage of the intermediate oxadiazolidines to nitrones and cyclodehydration of the latter afforded both 2-aryl- and 2-aroylnaphtho-[1,2-d]oxazoles in good yields. The interpretation of the reaction received confirmation by independent