Tuning the reactivity of alkoxyl radicals from 1,5-hydrogen atom transfer to 1,2-silyl transfer.
Tuning the reactivity of alkoxyl radicals from 1,5-hydrogen atom transfer to 1,2-silyl transfer.
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将烷氧基的反应性从 1,5-氢原子转移调整为 1,2-甲硅烷基转移
DOI:
10.1038/s41467-021-22382-y
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发表时间:
2021-04-09
影响因子:
16.6
通讯作者:
Shen X
中科院分区:
文献类型:
--
作者:
Yang Z;Niu Y;He X;Chen S;Liu S;Li Z;Chen X;Zhang Y;Lan Y;Shen X
Controlling the reactivity of reactive intermediates is essential to achieve selective transformations. Due to the facile 1,5-hydrogen atom transfer (HAT), alkoxyl radicals have been proven to be important synthetic intermediates for the δ-functionalization of alcohols. Herein, we disclose a strategy to inhibit 1,5-HAT by introducing a silyl group into the α-position of alkoxyl radicals. The efficient radical 1,2-silyl transfer (SiT) allows us to make various α-functionalized products from alcohol substrates. Compared with the direct generation of α-carbon radicals from oxidation of α-C-H bond of alcohols, the 1,2-SiT strategy distinguishes itself by the generation of alkoxyl radicals, the tolerance of many functional groups, such as intramolecular hydroxyl groups and C-H bonds next to oxygen atoms, and the use of silyl alcohols as limiting reagents. The generation of α-carbon radicals from alkoxyl radicals is challenging because 1,2-hydrogen atom transfer (HAT) is usually less favoured than 1,5-HAT. Here, the authors report a strategy to inhibit 1,5-HAT by introducing a silyl group into the α-position of alkoxyl radicals, enabling preparation of α-alkoxylimino alcohols and α-heteroaryl alcohols.
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影响因子:
15
作者:
Lo JC;Kim D;Pan CM;Edwards JT;Yabe Y;Gui J;Qin T;Gutiérrez S;Giacoboni J;Smith MW;Holland PL;Baran PS
通讯作者:
Baran PS
影响因子:
3.6
作者:
Huang, CH;Chang, SY;Tsai, YM
通讯作者:
Tsai, YM
影响因子:
15
作者:
Jia, Kunfang;Zhang, Fuyuan;Chen, Yiyun
通讯作者:
Chen, Yiyun
影响因子:
15
作者:
Deng Y;Liu Q;Smith AB 3rd
通讯作者:
Smith AB 3rd
影响因子:
5.2
作者:
Jackl, Moritz K.;Legnani, Luca;Bode, Jeffrey W.
通讯作者:
Bode, Jeffrey W.