Stereoselective Conjugate Addition of Metallated 2-Methylpyridine to Functionalized α,β-Unsaturated Carbonyl Compounds
作者:Bernardo Herradón、Francisco Sánchez-Sancho
DOI:10.3987/com-03-9806
日期:——
reaction of bis-(2-pyridylmethyl)cyanocuprate (3) with a variety of α,β-unsaturated carbonyl compounds is reported. It has been found that while the reaction with enone goes through a 1,2-addition path, the outcome ofthe reaction with α,β-unsaturated esters depends on the structure of the electrophile, giving the conjugate addition product with γ-hetero-substituted α,β-unsaturated esters. On the other
报道了双-(2-吡啶基甲基)氰基铜酸盐 (3) 与多种 α,β-不饱和羰基化合物的反应。已经发现,虽然与烯酮的反应经过 1,2-加成路径,但与 α,β-不饱和酯的反应结果取决于亲电试剂的结构,得到与 γ-杂取代的共轭加成产物α,β-不饱和酯。另一方面,3 与含氧丁烯内酯的反应是立体选择性的,得到 1,4-加成产物。