Synthesis of 5-alkylidene-2,5-dihydropyrrol-2-ones based on cyclizations of 1,3-bis(trimethylsilyloxy)-1,3-butadienes with oxalyl chloride
作者:Christian Haase、Peter Langer
DOI:10.1016/j.tet.2009.03.102
日期:2009.6
The acid-mediated reaction of amines with γ-alkylidenebutenolides, readily available by cyclization of 1,3-bis(silyloxy)-1,3-butadienes with oxalyl chloride, allows a convenient synthesis of a variety of 5-alkylidene-2,5-dihydropyrrol-2-ones. The configuration of the exocyclic double bond of the products depends on the substitution pattern of the products.
胺与γ-亚烷基丁烯内酯的酸介导反应,可通过将草酸氯与1,3-双(甲硅烷氧基)-1,3-丁二烯环化获得,可以方便地合成各种5-亚烷基-2,5 -二氢吡咯-2-酮。产物的环外双键的构型取决于产物的取代方式。