Tandem Nucleophilic Addition−Intramolecular Aza-Michael Reaction: Facile Synthesis of Chiral Fluorinated Isoindolines
作者:Santos Fustero、Javier Moscardó、María Sánchez-Roselló、Elsa Rodríguez、Pablo Barrio
DOI:10.1021/ol102341n
日期:2010.12.3
A highly stereoselective synthesis of fluorinated 1,3-disubstituted isoindolines is described. To this end, a tandem reaction consisting of a diastereoselective addition of fluorinated nucleophiles to Ellman’s N-(tert-butanesulfinyl)imines followed by an intramolecular aza-Michael reaction has been developed. This strategy allows for the construction of isoindolines bearing several degrees of fluorination
描述了氟化的1,3-二取代的异吲哚啉的高度立体选择性的合成。为此,已经开发了一种串联反应,该串联反应包括将氟化的亲核试剂非对映选择性地加至Ellman的N-(叔丁烷亚磺酰基)亚胺,然后进行分子内的氮杂-Michael反应。该策略允许构建带有数个氟化度的异二氢吲哚(单,二或三氟甲基以及更重的氟化基团)。在大多数情况下,产物都是单一异构体形式。