2-Methyleneaziridines proved to be good substrates for the cycloaddition with isocyanates, for which a tiniodide system, Bu2SnI2–LiI, was employed as an effective catalyst. Products were derived from N-attack of the ring-opened metalloenamine intermediate.
2-Methyleneaziridine are a good substrate for the catalytic synthesis of cyclopentylidenamines via a [3 + 2] cycloaddition of 1,1-dicyanoalkenes using Bu2SnI2 as an effective catalyst. A C-attack from 2-methyleneaziridine yielded the desired products.
Synthesis of 1,2,3,4-tetrasubstituted pyrrole derivatives via the palladium-catalyzed reaction of 1,3-diketones with methyleneaziridines
作者:Kalum K.A.D.S. Kathriarachchi、Amal I. Siriwardana、Itaru Nakamura、Yoshinori Yamamoto
DOI:10.1016/j.tetlet.2007.01.170
日期:2007.3
The palladium-catalyzed reaction of 1,3-diketones 2 with methyleneaziriclines 1 produced the corresponding 1,2,3,4-tetrasubstituted pyrroles 3 in good to high yields. (c) 2007 Elsevier Ltd. All rights reserved.