A Photocatalytic Regioselective Direct Hydroaminoalkylation of Aryl-Substituted Alkenes with Amines
作者:Natalia A. Larionova、Jun Miyatake Ondozabal、Emily G. Smith、Xacobe C. Cambeiro
DOI:10.1021/acs.orglett.1c01715
日期:2021.7.16
hydroaminoalkylation of cinnamate esters has been developed. The reaction involves the regioselective addition of α-aminoalkyl radicals generated from aniline derivatives or aliphatic amines to the α-position of unsaturated esters. The scope of aromatic alkenes was extended to styrenes undergoing hydroaminoalkylation with anti-Markovnikov selectivity, which confirms the importance of the aromatic group
Hydroaminoalkylation of sterically hindered alkenes with <i>N</i>,<i>N</i>-dimethyl anilines using a scandium catalyst
作者:Jianhong Su、Yiqun Zhou、Xin Xu
DOI:10.1039/c8ob02657b
日期:——
An atom- and step-economical C(sp3)–H addition of N,N-dimethyl anilines to various sterically demanding 1,1- and 1,2-disubstituted alkenes has been achieved by using a simple β-diketiminato ligand supported scandium dialkyl complex in combination with a borate compound. The corresponding C(sp3)–C(sp3) bond forming reaction occurs with excellent regioselectivities to give a variety of tertiary aromatic
Csp<sup>3</sup>–H monofluoroalkenylation <i>via</i> stereoselective C–F bond cleavage
作者:Ying Hu、Xingchen Liu、Zhouyang Ren、Binjing Hu、Jie Li
DOI:10.1039/d1cc06247f
日期:——
A practical nickel- and photoredox-catalyzed Csp3–H monofluoroalkenylation with gem-difluoroalkenes for the synthesis of stereodefined tetrasubstituted fluoroalkenes with complete control of stereoselectivity has been developed.
An unprecedented arylboration of unactivated terminal alkenes, featuring 1,n‐regioselectivity, has been achieved by nickelcatalysis. The nitrogen‐based ligand plays an essential role in the success of this three‐component reaction. This transformation displays good regioselectivity and excellent functional‐group tolerance. In addition, the incorporation of a boron group into the products provides
Photoredox catalytic aminomethylation of sulfonylthiazoles
作者:Li Meng、Jun Dong、Yan Tang、Hekun Yang、Long Sun、Jingchao Chen、Baomin Fan
DOI:10.1039/d4gc00718b
日期:——
A photoredox catalytic aliphatic C(sp3)–H thiazolation of tertiary amines was developed, affording the biologically valuable alkylated thiazoles via the aminomethylation of sulfonylthiazoles. The reaction is metal and oxidant free, with a broad substrate scope that tolerates both aliphatic and aromatic amines. The successful applications in the gram-scale reaction and late-stage functionalization of