Application of Naphthylindole-Derived Phosphines as Organocatalysts in [4 + 1] Cyclizations of <i>o</i>-Quinone Methides with Morita–Baylis–Hillman Carbonates
作者:Fei Jiang、Gui-Zhen Luo、Zi-Qi Zhu、Cong-Shuai Wang、Guang-Jian Mei、Feng Shi
DOI:10.1021/acs.joc.8b01390
日期:2018.9.7
organocatalytic [4 + 1] cyclization of o-QMs with MBH carbonates has been established using naphthylindole-derived phosphine (NIP) as an organocatalyst. By using this approach, a series of 2,3-dihydrobenzofuran derivatives have been synthesized in high yields and excellent diastereoselectivities (up to 99% yield, >95:5 dr). This reaction not only has established the first [4 + 1] cyclization of o-QMs with MBH
Enantioselective Synthesis of Highly Functionalized Trifluoromethyl-Bearing Cyclopentenes: Asymmetric [3+2] Annulation of Morita-Baylis-Hillman Carbonates with Trifluoroethylidenemalonates Catalyzed by Multifunctional Thiourea-Phosphines
作者:Hong-Ping Deng、Yin Wei、Min Shi
DOI:10.1002/adsc.201101012
日期:2012.3.16
synthesis of multifunctional thiourea‐phosphines, a catalytic method for the asymmetric [3+2] annulation of Morita–Baylis–Hillmancarbonates with trifluoroethylidenemalonates has been developed, affording highly functionalized trifluoromethyl‐bearing cyclopentenes in excellent yields, high diastereoselectivities and enantioselectivities under mild conditions.
Phosphine-catalyzed asymmetric [4+1] annulation of Morita–Baylis–Hillman carbonates with dicyano-2-methylenebut-3-enoates
作者:Xiao-nan Zhang、Hong-Ping Deng、Long Huang、Yin Wei、Min Shi
DOI:10.1039/c2cc34619b
日期:——
asymmetric [4+1] annulation of MBH carbonates with dicyano-2-methylenebut-3-enoates has been developed for the first time, providing an efficient and enantioselectivesynthesis of highlyfunctionalized cyclopentenes bearing one all-carbon quaternarystereogeniccenter.