Remote C-H functionalization using radical translocating arylating groups.
Remote C-H functionalization using radical translocating arylating groups.
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DOI:
10.1038/s41467-018-05193-6
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发表时间:
2018-07-18
影响因子:
16.6
通讯作者:
Studer A
中科院分区:
文献类型:
--
作者:
Friese FW;Mück-Lichtenfeld C;Studer A
Site selective chemical functionalization at unactivated C(sp3)−H bonds is highly challenging and recent successful studies mostly focus on the use of transition metal catalysis in combination with directing groups. Radical chemistry offers a complementary approach with the Barton and the Hofmann-Löffler-Freytag reactions being landmark contributions in the area of remote C−H functionalization at unactivated aliphatic sites. Herein we introduce the concept of radical translocation arylation at unactivated secondary and tertiary C(sp3)−H bonds in various alcohols. The straightforward two-step sequence comprises an ionic alcohol sulfonylation with especially designed ortho-iodoaryl sulfonyl chlorides followed by a radical cascade reaction including aryl radical generation, remote radical translocation, aryl migration, reduction, and SO2 extrusion to give the corresponding γ-arylated alcohols. Moderate to good yields are obtained, remote C−H arylation occurs with excellent regioselectivity and for secondary C(sp3)−H bonds good to excellent stereoselectivity is achieved. Selective remote functionalization of aliphatic C(sp3)−H bonds is highly challenging and often requires transition metals and/or directing groups. Here, the authors show the γ-arylation of aliphatic alcohols via a two-step radical translocation and subsequent radical aryl migration.
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影响因子:
64.8
作者:
Chu JC;Rovis T
通讯作者:
Rovis T
影响因子:
18.3
作者:
Daugulis O;Roane J;Tran LD
通讯作者:
Tran LD
DOI:
10.1055/s-0036-1591930
发表时间:
2018-04
期刊:
Synthesis
影响因子:
--
作者:
Stateman LM;Nakafuku KM;Nagib DA
通讯作者:
Nagib DA
影响因子:
21.8
作者:
通讯作者:
--
影响因子:
62.1
作者:
He J;Wasa M;Chan KSL;Shao Q;Yu JQ
通讯作者:
Yu JQ