Copper-Catalyzed Addition of Ethyl Diazoacetate to Furans: An Alternative to Dirhodium(II) Tetraacetate
作者:Ana Caballero、M. Mar Díaz-Requejo、Swiatoslaw Trofimenko、Tomás R. Belderrain、Pedro J. Pérez
DOI:10.1021/jo050551d
日期:2005.7.1
The complexes TpxCu (Tpx = homoscorpionate ligand) catalyze the high yield addition of the carbene fragment :CHCO2Et, from ethyl diazoacetate, to furans under mild conditions to give different cyclopropanes and dienes with ratios that depend on the Tpx ligand employed, therefore inducing the control of the selectivity in this transformation.
配合物Tp x铜(Tp x=高蝎子配体)在温和条件下催化从重氮乙酸乙酯将卡宾片段:CHCO 2 Et高产率地加到呋喃中,得到比例取决于Tp x的不同的环丙烷和二烯 所使用的配体,因此在该转化中诱导了对选择性的控制。