Acid-mediated intramolecular cationic cyclization using an oxygen atom as internal nucleophile: synthesis of substituted oxazolo-, oxazino- and oxazepinoisoindolinones
作者:Jana Sikoraiová、Štefan Marchalı́n、Adam Daı̈ch、Bernard Decroix
DOI:10.1016/s0040-4039(02)00910-3
日期:2002.7
12–15 and 19) is described in three steps according to an acidic α-oxoamidoalkylation reaction from ready available phthalic anhydride by successive imidation, sodium borohydride reduction and intramolecular cationic cyclization involving N-acyliminium species. The relative stereochemistry accompanying these reactions was also discussed.
的取代oxazolo-,oxazino-有效的组装,和oxazepinoisoindolinones(5 - 7,12 - 15和19)根据从准备可用的邻苯二甲酸酐通过连续酰亚胺化,硼氢化钠还原和分子内的酸性α-oxoamidoalkylation反应在三个步骤中所描述涉及N-酰基亚胺基团的阳离子环化反应。还讨论了伴随这些反应的相对立体化学。