Synthesis 2023; 55(17): 2779-2785
DOI: 10.1055/a-2069-4269
paper
Special Issue Honoring Prof. Guoqiang Lin's Contributions to Organic Chemistry

Synthesis of Dibenzo[f,h]quinolines by Stepwise C–H Arylation of 2-Phenylpyridine and Reductive Cyclodehydrogenation

Yan-Qin He
a   Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Photochemistry, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, 2 Bei Yi Jie, Zhong Guan Cun, Haidian District, Beijing 100190, P. R. of China
b   Institute of BioPharmaceutical Research, Liaocheng University, Liaocheng, Shandong 252059, P. R. of China
,
Zhong-Qiu Li
a   Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Photochemistry, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, 2 Bei Yi Jie, Zhong Guan Cun, Haidian District, Beijing 100190, P. R. of China
,
Yu-Wu Zhong
a   Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Photochemistry, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, 2 Bei Yi Jie, Zhong Guan Cun, Haidian District, Beijing 100190, P. R. of China
c   School of Chemical Sciences, University of Chinese Academy of Sciences, No.19(A) Yuquan Road, Shijingshan District, Beijing 100049, P. R. of China
› Author Affiliations
This work was supported by the National Natural Science Foundation of China (22001106 and 21925112). Y.-Q.H. thanks the Youth Innovation Technology Project of Higher School in Shandong Province (No. 2021KJ099) for funding support. Z.-Q.L. acknowledges the support of a BMS Junior Fellowship from the Beijing National Laboratory for Molecular Sciences (BNLMS).


Dedicated to Prof. Guo-Qiang Lin on the occasion of his 80th birthday.

Abstract

A synthetic approach to dibenzo[f,h]quinolines and their derivatives via stepwise ruthenium-catalyzed C–H arylation and potassium-mediated reductive cyclodehydrogenation from 2-phenylpyridine and aryl bromides, is presented. One dibenzo[f,h]quinoline derivative is used as a bidentate ligand to prepare a cyclometalated ruthenium complex. Two dibenzo[f,h]quinoline compounds and the ruthenium complex were characterized by single-crystal X-ray structural analysis.

Supporting Information



Publication History

Received: 26 February 2023

Accepted after revision: 05 April 2023

Accepted Manuscript online:
05 April 2023

Article published online:
08 May 2023

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