Mechanistic Investigation of Ni-Catalyzed Reductive Cross-Coupling of Alkenyl and Benzyl Electrophiles.
Mechanistic Investigation of Ni-Catalyzed Reductive Cross-Coupling of Alkenyl and Benzyl Electrophiles.
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DOI:
10.1021/jacs.3c02649
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发表时间:
2023-07-12
影响因子:
15
通讯作者:
Reisman, Sarah E.
中科院分区:
文献类型:
--
作者:
Turro, Raymond F.;Wahlman, Julie L. H.;Tong, Z. Jaron;Chen, Xiahe;Yang, Miao;Chen, Emily P.;Hong, Xin;Hadt, Ryan G.;Houk, K. N.;Yang, Yun-Fang;Reisman, Sarah E.
Mechanistic investigations of the Ni-catalyzed asymmetric reductive alkenylation of N-hydroxyphthalimide (NHP) esters and benzylic chlorides are reported. Investigations of the redox properties of the Ni-bis(oxazoline) catalyst, the reaction kinetics, and mode of electrophile activation show divergent mechanisms for these two related transformations. Notably, the mechanism of C(sp3) activation changes from a Ni-mediated process when benzyl chlorides and Mn0 are used to a reductant-mediated process that is gated by a Lewis acid when NHP esters and tetrakis(dimethylamino)ethylene is used. Kinetic experiments show that changing the identity of the Lewis acid can be used to tune the rate of NHP ester reduction. Spectroscopic studies support a NiII–alkenyl oxidative addition complex as the catalyst resting state. DFT calculations suggest an enantiodetermining radical capture step and elucidate the origin of enantioinduction for this Ni-BOX catalyst.
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影响因子:
15
作者:
Biswas S;Weix DJ
通讯作者:
Weix DJ
影响因子:
15
作者:
Lin Q;Fu Y;Liu P;Diao T
通讯作者:
Diao T
影响因子:
15
作者:
Everson, Daniel A.;Jones, Brittany A.;Weix, Daniel J.
通讯作者:
Weix, Daniel J.
DOI:
10.1002/anie.201906005
发表时间:
2019-09-23
期刊:
Angewandte Chemie (International ed. in English)
影响因子:
--
作者:
Diccianni JB;Hu CT;Diao T
通讯作者:
Diao T
影响因子:
15
作者:
Diccianni, Justin B.;Katigbak, Joseph;Diao, Tianning
通讯作者:
Diao, Tianning