Selective ortho-C-H Activation in Arenes without Functional Groups.
Selective ortho-C-H Activation in Arenes without Functional Groups.
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DOI:
10.1021/jacs.2c04621
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发表时间:
2022-07-06
影响因子:
15
通讯作者:
Sergeev, Alexey G.
中科院分区:
文献类型:
--
作者:
Chan, Antony P. Y.;Jakoobi, Martin;Wang, Chenxu;O'Neill, Robert T.;Aydin, Gulsevim S. S.;Halcovitch, Nathan;Boulatov, Roman;Sergeev, Alexey G.
Aromatic C–H activation in alkylarenes is a key step for the synthesis of functionalized organic molecules from simple hydrocarbon precursors. Known examples of such C–H activations often yield mixtures of products resulting from activation of the least hindered C–H bonds. Here we report highly selective ortho-C–H activation in alkylarenes by simple iridium complexes. We demonstrate that the capacity of the alkyl substituent to override the typical preference of metal-mediated C–H activation for the least hindered aromatic C–H bonds results from transient insertion of iridium into the benzylic C–H bond. This enables fast iridium insertion into the ortho-C–H bond, followed by regeneration of the benzylic C–H bond by reductive elimination. Bulkier alkyl substituents increase the ortho selectivity. The described chemistry represents a conceptually new alternative to existing approaches for aromatic C–H bond activation.
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影响因子:
64.8
作者:
Leow, Dasheng;Li, Gang;Mei, Tian-Sheng;Yu, Jin-Quan
通讯作者:
Yu, Jin-Quan
影响因子:
15
作者:
CLEARY, BP;EISENBERG, R
通讯作者:
EISENBERG, R
影响因子:
15
作者:
JONES, WD;FEHER, FJ
通讯作者:
FEHER, FJ
影响因子:
2.8
作者:
Norris, CM;Reinartz, S;Templeton, JL
通讯作者:
Templeton, JL
影响因子:
15
作者:
OLAH, GA;FLOOD, SH;KUHN, SJ
通讯作者:
KUHN, SJ