Organocatalytic Enantioselective Construction of Axially Chiral Sulfone-Containing Styrenes
作者:Shiqi Jia、Zhili Chen、Nan Zhang、Yu Tan、Yidong Liu、Jun Deng、Hailong Yan
DOI:10.1021/jacs.8b03211
日期:2018.6.13
describe herein an organocatalytic enantioselective approach for the construction of axially chiral sulfone-containing styrenes. Various axially chiral sulfone-containing styrene compounds were prepared with excellent enantioselectivities (up to >99% ee) and almost complete E/ Z selectivities (>99% E/ Z). Furthermore, the axially chiral sulfone-containing styrenes could be easily converted into phosphonic
Catalytic asymmetric construction of C-4 alkenyl substituted pyrazolone derivatives bearing multiple stereoelements
作者:Wande Zhang、Shiqiang Wei、Wenyao Wang、Jingping Qu、Baomin Wang
DOI:10.1039/d1cc01123e
日期:——
An organocatalyticasymmetric process was reported for the sterically precise construction of C-4 alkenyl substituted pyrazolone derivatives bearing multiple stereoelements. A series of interesting products featuring the union of a centrally chiral pyrazolone moiety and an axially chiral styrene unit were obtained in high yield with excellent diastereoselectivity and enantioselectivity (up to 99% ee
Asymmetric Mannich Reaction and Construction of Axially Chiral Sulfone-Containing Styrenes in One Pot from α-Amido Sulfones Based on the Waste–Reuse Strategy
作者:Dongmei Li、Yu Tan、Lei Peng、Shan Li、Nan Zhang、Yidong Liu、Hailong Yan
DOI:10.1021/acs.orglett.8b02087
日期:2018.8.17
simultaneous asymmetric Mannichreaction and the construction of axially chiral sulfone-containing styrenes in one pot from α-amidosulfones based on the waste–reuse strategy was demonstrated. A series of chiral β-amino diesters and axially chiral sulfone-containing styrenes with various functional groups were synthesized in good to excellent yields and enantioselectivities under mild conditions. In
Rhodium‐Catalyzed Atroposelective Access to Axially Chiral Olefins via C−H Bond Activation and Directing Group Migration
作者:Ruijie Mi、Haohua Chen、Xukai Zhou、Nan Li、Danqing Ji、Fen Wang、Yu Lan、Xingwei Li
DOI:10.1002/anie.202111860
日期:2022.1.3
Two classes of tetrasubstituted axially chiral olefins have been accessed in excellent enantioselectivity via RhIII-catalyzed asymmetric C−Hactivation assisted by a migratable directinggroup.
the alkyne in redox‐neutral annulation with benzamides, with alkyne insertion being stereodetermining. The reaction accommodates both benzamides and heteroaryl carboxamides and proceeds in excellent regioselectivity (if applicable) and enantioselectivities (average 91.8 % ee ). An enantiomerically and diastereomerically pure rhodacyclic complex was prepared and offers insight into enantiomeric control