Synthesis 2021; 53(18): 3383-3389
DOI: 10.1055/s-0040-1706040
special topic
Bond Activation – in Honor of Prof. Shinji Murai

Deuterium-Labeling Studies on the C–H/Olefin Coupling of Aromatic Ketones Catalyzed by Fe(PMe3)4

Naoki Kimura
,
Shiori Katta
,
Yoichi Kitazawa
,
Takuya Kochi
,
Fumitoshi Kakiuchi
We acknowledge the financial support, in part, by JST CREST Grant Number JPMJCR20R1.


Abstract

Deuterium-labeling experiments were performed for the Fe(PMe3)4-catalyzed C–H/olefin coupling using a deuterium-labeled aromatic ketone with various alkenes. While the reactions with a variety of alkenes provided the linear alkylation products formed via 1,2-insertion of alkene into an Fe–H bond, the reversible 2,1-insertion proceeded during the reaction highly depends on the choice of the alkene. No H/D scrambling resulting from 2,1-insertion/β-elimination was detected for the reactions with a vinylsilane and N-vinylcarbazole, but the reactions­ with styrenes are considered to involve rapid 2,1-insertion/ β-elimination processes to cause significant levels of H/D scrambling.

Supporting Information



Publication History

Received: 30 March 2021

Accepted after revision: 27 April 2021

Article published online:
19 May 2021

© 2021. Thieme. All rights reserved

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