Copper-Catalyzed Vinylogous Aerobic Oxidation of Unsaturated Compounds with Air.
Copper-Catalyzed Vinylogous Aerobic Oxidation of Unsaturated Compounds with Air.
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DOI:
10.1021/jacs.8b01886
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发表时间:
2018-04-18
影响因子:
15
通讯作者:
Yin L
中科院分区:
文献类型:
--
作者:
Zhang HJ;Schuppe AW;Pan ST;Chen JX;Wang BR;Newhouse TR;Yin L
A mild and operationally simple copper-catalyzed vinylogous aerobic oxidation of β,γ- and α,β-unsaturated esters is described. This method features good yields, broad substrate scope, excellent chemo- and regioselectivity, and good functional group tolerance. This method is additionally capable of oxidizing β,γ- and α,β-unsaturated aldehydes, ketones, amides, nitriles, and sulfones. Furthermore, the present catalytic system is suitable for bisvinylogous and trisvinylogous oxidation. Tetramethylguanidine (TMG) was found to be crucial in its role as a base, but we also speculate that it serves as a ligand to copper(II) triflate to produce the active copper(II) catalyst. Mechanistic experiments conducted suggest a plausible reaction pathway via an allylcopper(II) species. Finally, the breadth of scope and power of this methodology are demonstrated through its application to complex natural product substrates.
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影响因子:
15
作者:
Chuang GJ;Wang W;Lee E;Ritter T
通讯作者:
Ritter T
影响因子:
8.4
作者:
Cheng HG;Miguélez J;Miyamura H;Yoo WJ;Kobayashi S
通讯作者:
Kobayashi S
影响因子:
5.2
作者:
Fukui, Hiroki;Shiina, Isamu
通讯作者:
Shiina, Isamu
影响因子:
2.1
作者:
Dehmlow, EV;Wagner, S;Müller, A
通讯作者:
Müller, A
影响因子:
3.6
作者:
GARDNER, JN;CARLON, FE;GNOJ, O
通讯作者:
GNOJ, O