Synthesis 2023; 55(16): 2483-2486
DOI: 10.1055/a-2063-1330
psp
Special Issue Honoring Prof. Guoqiang Lin’s Contributions to Organic Chemistry

An Improved Synthesis of Chiral 2,2′-Bipyridine Ligand C3-ACBP Without Column Chromatography

Zheng Liu
a   State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, P. R. of China
b   University of Chinese Academy of Sciences, Beijing 100049, P. R. of China
,
Sheng-Mei Lu
a   State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, P. R. of China
,
Bao-Qian Zhao
a   State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, P. R. of China
,
Hao-Dong Chen
a   State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, P. R. of China
,
Mu-Wang Chen
a   State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, P. R. of China
,
Yong-Gui Zhou
a   State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, P. R. of China
› Author Affiliations


Abstract

A method for purifying compounds bearing pyridine structure from Mitsunobu reaction mixtures using zinc chloride and releasing bipyridines from Ullmann coupling reaction mixtures by using sulfide anion for competitively coordinating the copper ion were developed for the facile synthesis of the chiral 2,2′-bipyridine ligand (Ra ,S,S)-C3-ACBP. With these improvements, an improved synthesis of the chiral ligand at a 7 gram scale has been fulfilled in 48% overall yield without column chromatography within 3–4 days.

Supporting Information



Publication History

Received: 25 February 2023

Accepted after revision: 27 March 2023

Accepted Manuscript online:
27 March 2023

Article published online:
24 April 2023

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