High Regio- and Stereoselective Cycloaddition of a Nitrone to Alkylidenecyclopropanes
作者:Alberto Brandi、Silvio Carli、Andrea Goti
DOI:10.3987/com-87-4312
日期:——
The regioselectivity of nitrone and nitrile oxide cycloadditions to alkylidenecyclopropanes
作者:Alberto Brandi、Franca M. Cordero、Francesco De Sarlo、Remo Gandolfi、Andrea Rastelli、Marisa Bagatti
DOI:10.1016/0040-4020(92)85008-3
日期:1992.1
The 1,3-dipolarcycloaddition of nitrile oxides and a nitrone to alkylidencyclopropanes 1–5,used as model for methylenecyclopropanes substituted with arylgroup (1), electron-releasing groups (2 and 3) and electron-attracting groups (4 and 5) is reported. The cycloaddition to alkylidenecyclopropanes 1–3 gives prevalently or exclusively adducts bearing the cyclopropane ring on the C4 position of the