Copper-Catalyzed C(sp3)–H Methylation via Radical Relay
Copper-Catalyzed C(sp3)–H Methylation via Radical Relay
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通过自由基中继的铜催化 C(sp3)→H 甲基化
DOI:
10.1021/acscatal.2c02474
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发表时间:
2022
期刊:
影响因子:
12.9
通讯作者:
Warren, Timothy H.
中科院分区:
文献类型:
--
作者:
Figula, Bryan C.;Chen, Ting-An;Bertke, Jeffery A.;Warren, Timothy H.
The methyl moiety is a key functional group that can result in major improvements in the potency and selectivity of pharmaceutical agents. We present a radical relay C–H methylation methodology that employs a β-diketiminate copper catalyst capable of methylating unactivated C(sp3)–H bonds. Taking advantage of the bench-stable DABAL-Me3, an amine-stabilized trimethylaluminum reagent, methylation of a range of substrates possessing both activated and unactivated C(sp3)–H bonds proceeds with a minimal amount of overmethylation. Mechanistic studies supported by both experiment and computation suggest the intermediacy of a copper(II) methyl intermediate reactive toward both the loss of the methyl radical as well capture of radicals R•to form R–Me bonds.
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DOI:
--
发表时间:
1963
期刊:
影响因子:
--
作者:
Isabel B. Burkley;R. Rebbert
通讯作者:
R. Rebbert
影响因子:
15
作者:
Bakhoda, Abolghasem;Okoromoba, Otome E.;Warren, Timothy H.
通讯作者:
Warren, Timothy H.
影响因子:
36.3
作者:
Golden, Dung L.;Suh, Sung-Eun;Stahl, Shannon S.
通讯作者:
Stahl, Shannon S.
影响因子:
16.6
作者:
Leibler IN;Tekle-Smith MA;Doyle AG
通讯作者:
Doyle AG
影响因子:
15
作者:
Finn, M;Friedline, R;Tanko, JM
通讯作者:
Tanko, JM