Synthesis of New MeO-BIPHEP-type Chiral Diphosphines by an Improved Way
Meng-Lin Ma
Key Laboratory of Green Chemistry and Technology of Ministry of Education, Institute of Homogeneous Catalysis, Faculty of Chemistry, Sichuan University, Chengdu, Sichuan 610064, China
Department of Chemistry, Xihua University, Chengdu, Sichuan 611930, China
Search for more papers by this authorZong-Hai Peng
Key Laboratory of Green Chemistry and Technology of Ministry of Education, Institute of Homogeneous Catalysis, Faculty of Chemistry, Sichuan University, Chengdu, Sichuan 610064, China
Search for more papers by this authorLi Chen
Key Laboratory of Green Chemistry and Technology of Ministry of Education, Institute of Homogeneous Catalysis, Faculty of Chemistry, Sichuan University, Chengdu, Sichuan 610064, China
Search for more papers by this authorYu Guo
Key Laboratory of Green Chemistry and Technology of Ministry of Education, Institute of Homogeneous Catalysis, Faculty of Chemistry, Sichuan University, Chengdu, Sichuan 610064, China
Search for more papers by this authorXian-Jun Li
Key Laboratory of Green Chemistry and Technology of Ministry of Education, Institute of Homogeneous Catalysis, Faculty of Chemistry, Sichuan University, Chengdu, Sichuan 610064, China
Search for more papers by this authorMeng-Lin Ma
Key Laboratory of Green Chemistry and Technology of Ministry of Education, Institute of Homogeneous Catalysis, Faculty of Chemistry, Sichuan University, Chengdu, Sichuan 610064, China
Department of Chemistry, Xihua University, Chengdu, Sichuan 611930, China
Search for more papers by this authorZong-Hai Peng
Key Laboratory of Green Chemistry and Technology of Ministry of Education, Institute of Homogeneous Catalysis, Faculty of Chemistry, Sichuan University, Chengdu, Sichuan 610064, China
Search for more papers by this authorLi Chen
Key Laboratory of Green Chemistry and Technology of Ministry of Education, Institute of Homogeneous Catalysis, Faculty of Chemistry, Sichuan University, Chengdu, Sichuan 610064, China
Search for more papers by this authorYu Guo
Key Laboratory of Green Chemistry and Technology of Ministry of Education, Institute of Homogeneous Catalysis, Faculty of Chemistry, Sichuan University, Chengdu, Sichuan 610064, China
Search for more papers by this authorXian-Jun Li
Key Laboratory of Green Chemistry and Technology of Ministry of Education, Institute of Homogeneous Catalysis, Faculty of Chemistry, Sichuan University, Chengdu, Sichuan 610064, China
Search for more papers by this authorAbstract
In this paper, a series of new optically active MeO-BIPHEP-type ligands, (S)-6,6′-dimethoxy-2,2′-bis(di- p-alkoxyphenyl-phosphine)-1,1′-biphenyl [(S)-5b–(S)-5e] were prepared and characterized. Starting from the commercially available triethyl phosphorite and m-bromoanisole, an optically active (S)-6,6′-dimethoxybiphenyl- 2,2′-diyl-bis(phosphonic acid diester) was prepared by an improved way and converted to the corresponding dichlorides, which was used as a key intermediate to react with p-alkoxybenzenemagnesium bromide or p-alkoxyphenyl lithium to directly give the enantiomerically pure diphosphines 5.
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