The aldol addition of readily enolizable 1,3-dicarbonyl compounds to 2-cyanobenzaldehyde in the presence of a tertiary amine led to a series of new 3-substituted isoindolinones. Despite the instability of the related aldols, this synthesis was possible because of the intramolecular trapping of the adducts with the cyano group due to a tandem process of cyclization and rearrangement. Simple decarboxylation of some derivatives gave access to very useful compounds.
可通过三
氟化胺的存在下,易于脱氢醇化的1,3-二羰基化合物与
2-氰基苯甲醛进行的醇醛加成反应,得到了系列新的3-取代异
吲哚酮。尽管相关的醇醛不稳定,但由于环化和重排的串联过程,产物与
氰基的分子内捕捉使得这一步合成成为可能。对某些衍
生物简单的脱羧反应则获得了非常有用的化合物。