Li X, Liu C, Wang L, Ye Q, Jin X, Jin Z. Temperature-controlled sequential Suzuki-Miyaura reactions for preparing unsymmetrical terphenyls.
Org Biomol Chem 2019;
16:8719-8723. [PMID:
30191227 DOI:
10.1039/c8ob01661e]
[Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
A one-pot protocol of double Suzuki-Miyaura reactions has been developed for the synthesis of unsymmetrical terphenyls. In the absence of a ligand, potassium bromophenyltrifluoroborate reacts with arylboronic acid and then sequentially with a hetero/aryl bromide by controlling the reaction temperature, providing unsymmetrical p- and m-terphenyl compounds in moderate to good overall yields. This protocol provides a convenient and practical approach to unsymmetrical terphenyls under ligand-free and aerobic conditions.
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