Molecules (2019)
Update date:2022-08-04
Topics:
Komeyama, Kimihiro
Tsunemitsu, Ryusuke
Michiyuki, Takuya
Yoshida, Hiroto
Osaka, Itaru
A direct reductive homo-coupling of alkyl tosylates has been developed by employing a combination of nickel and nucleophilic cobalt catalysts. A single-electron-transfer-type oxidative addition is a pivotal process in the well-established nickel-catalyzed coupling of alkyl halides. However, the method cannot be applied to the homo-coupling of ubiquitous alkyl tosylates due to the high-lying σ*(C–O) orbital of the tosylates. This paper describes a Ni/Co-catalyzed protocol for the activation of alkyl tosylates on the construction of alkyl dimers under mild conditions.
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