Organocatalyzed Birch Reduction Driven by Visible Light.
Organocatalyzed Birch Reduction Driven by Visible Light.
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DOI:
10.1021/jacs.0c05899
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发表时间:
2020-08-05
影响因子:
15
通讯作者:
Miyake GM
中科院分区:
文献类型:
--
作者:
Cole JP;Chen DF;Kudisch M;Pearson RM;Lim CH;Miyake GM
The Birch reduction is a powerful synthetic methodology that uses solvated electrons to convert inert arenes to 1,4-cyclohexadienes—valuable intermediates for building molecular complexity. Birch reductions traditionally employ alkali metals dissolved in ammonia to produce a solvated electron for the reduction of unactivated arenes such as benzene (Ered < −3.42 V vs SCE). Photoredox catalysts have been gaining popularity in highly reducing applications, but none have been reported to demonstrate reduction potentials powerful enough to reduce benzene. Here, we introduce benzo[ghi]perylene imides as new organic photoredox catalysts for Birch reductions performed at ambient temperature and driven by visible light from commercially available LEDs. Using low catalyst loadings (<1 mol percent), benzene and other functionalized arenes were selectively transformed to 1,4-cyclohexadienes in moderate to good yields in a completely metal-free reaction. Mechanistic studies support that this unprecedented visible-light-induced reactivity is enabled by the ability of the organic photoredox catalyst to harness the energy from two visible-light photons to affect a single, high-energy chemical transformation.
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影响因子:
2.9
作者:
Gosztola, D;Niemczyk, MP;Wasielewski, MR
通讯作者:
Wasielewski, MR
影响因子:
15
作者:
Guha, Samit;Goodson, Flynt S.;Saha, Sourav
通讯作者:
Saha, Sourav
DOI:
10.1039/jr9440000430
发表时间:
1944-01-01
期刊:
JOURNAL OF THE CHEMICAL SOCIETY
影响因子:
--
作者:
Birch, AJ
通讯作者:
Birch, AJ
影响因子:
16.6
作者:
Buss, Bonnie L.;Lim, Chern-Hooi;Miyake, Garret M.
通讯作者:
Miyake, Garret M.
影响因子:
5.2
作者:
Lei, Peng;Ding, Yuxuan;An, Jie
通讯作者:
An, Jie