Synthesis of 1,2-oxazaheterocycles containing an isoindolone moiety from<i>N</i>-Hydroxyphthalimide
作者:Alexander Bartovic、Bernard Decroix、P. Netchitaïlo
DOI:10.1002/jhet.5570370426
日期:2000.7
and halogenomethylaryl derivatives. The resulting aryloxy phthalimides 4a-c were reduced to hydroxylactams 5a-c which cyclized in acidic conditions. A Wittig reaction on 5a using carbethoxymethylidenetriphenylphosphorane gave the corresponding acid 6 which treated in Friedel and Crafts conditions led to the isoxazolinone 8 by cleavage of the benzyl CO bond.
由N-羟基邻苯二甲酰亚胺3和卤代甲基芳基衍生物开发了异吲哚并苯并恶嗪酮1a和噻嗪并异吲哚并酮1b,c的合成物。将所得的芳氧基邻苯二甲酰亚胺4a-c还原为羟基内酰胺5a-c,其在酸性条件下环化。使用碳乙氧基甲基亚甲基三苯基苯基膦在5a上进行维蒂希反应,得到相应的酸6,该酸在Friedel和Crafts条件下处理,通过裂解苄基C O键产生异恶唑啉酮8。