Synthesis 2021; 53(17): 3065-3074
DOI: 10.1055/a-1328-6436
special topic
Bond Activation – in Honor of Prof. Shinji Murai

Dienylation of Unfunctionalized Arenes with 1,6-Diynes via Rhodium-Catalyzed Directing-Group-Free C–H Bond Activation

Hiroto Takahashi
,
Yusaku Honjo
,
Yu Shibata
,
Yuki Nagashima
,
Ken Tanaka
This work was supported partly by a Grant-in-Aid for Scientific Research (No. JP19H00893 to K.T. and No. JP20K22521 to Y.N.) from the Japan Society for the Promotion of Science (JSPS, Japan).


Abstract

It has been established that the dienylation of unfunctionalized arenes with 1,6-diynes, possessing aryl groups at the diyne termini, proceeds to give the corresponding dienylated arenes in the presence of a catalytic amount of an electron-deficient cyclopentadienyl rhodium(III) complex, [CpERhCl2]2, and a stoichiometric amount of silver carbonate. Experimental and theoretical mechanistic studies revealed that a CpERh(I) complex generated in situ might catalyze the present dienylation­ reaction.

Supporting Information



Publication History

Received: 13 November 2020

Accepted after revision: 03 December 2020

Accepted Manuscript online:
03 December 2020

Article published online:
11 January 2021

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