Directed Cobalt-Catalyzed anti -Markovnikov Hydroalkylation of Unactivated Alkenes Enabled by "Co-H" Catalysis

The earth-abundant cobalt-catalyzed -Markovnikov hydroalkylation of unactivated alkenes with oxime esters was achieved by introducing an 8-aminoquinoline directing group on the alkenes. The catalytic system, consisting of commercially available Co(acac) and PhMeSiH , enables the construction of unfu...

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Veröffentlicht in:Organic letters 2020-06, Vol.22 (11), p.4333-4338
Hauptverfasser: Yang, Dandan, Huang, Hai, Li, Meng-Hui, Si, Xiao-Ju, Zhang, He, Niu, Jun-Long, Song, Mao-Ping
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container_end_page 4338
container_issue 11
container_start_page 4333
container_title Organic letters
container_volume 22
creator Yang, Dandan
Huang, Hai
Li, Meng-Hui
Si, Xiao-Ju
Zhang, He
Niu, Jun-Long
Song, Mao-Ping
description The earth-abundant cobalt-catalyzed -Markovnikov hydroalkylation of unactivated alkenes with oxime esters was achieved by introducing an 8-aminoquinoline directing group on the alkenes. The catalytic system, consisting of commercially available Co(acac) and PhMeSiH , enables the construction of unfunctionalized C(sp )-C(sp ) bonds and features exclusive -Markovnikov selectivity, good functional group tolerance, and the avoidance of an extra ligand, oxidant, or base. Mechanistic insight into this new catalytic system indicates the involvement of both alkyl radical and cobalt hydride intermediates.
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title Directed Cobalt-Catalyzed anti -Markovnikov Hydroalkylation of Unactivated Alkenes Enabled by "Co-H" Catalysis
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