A Highly Regio- and Diastereoselective Phosphane-Catalyzed [3+2] Annulation of Morita-Baylis-Hillman Carbonates with Cyclic<i>N</i>-Acyl Ketimines
作者:Li-Jun Yang、Hua Cai、Jing Nie、Jun-An Ma
DOI:10.1002/ejoc.201300342
日期:2013.7
A highlyregio- and diastereoselectivephosphane-catalyzed [3+2] annulation of Morita–Baylis–Hillman (MBH) carbonates with cyclic N-acyl-substituted ketimines was developed. In the presence of the catalyst PBu3 (10 mol-%), a series of N-fused tricyclic products were obtained in excellent yields and diastereoselectivities under mild conditions. An example of a catalytic enantioselective annulation is
Catalyst-controlled switch of regioselectivity in the asymmetric allylic alkylation of oxazolones with MBHCs
作者:Gongming Zhu、Junxian Yang、Guangjun Bao、Ming Zhang、Jing Li、Yiping Li、Wangsheng Sun、Liang Hong、Rui Wang
DOI:10.1039/c6cc03246j
日期:——
A catalyst-controlled switch of regioselectivity in asymmetric allylicalkylation of oxazolones with MBHCs was described. The proper choice of catalysts could differentiate the SN2'-SN2' and addition-elimination process to yield secondary...