Kiselev AN, Grigorova OK, Averin AD, Syrbu SA, Koifman OI, Beletskaya IP. Direct catalytic arylation of heteroarenes with
meso-bromophenyl-substituted porphyrins.
Beilstein J Org Chem 2017;
13:1524-1532. [PMID:
28845197 PMCID:
PMC5550796 DOI:
10.3762/bjoc.13.152]
[Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2017] [Accepted: 06/22/2017] [Indexed: 11/23/2022] Open
Abstract
The arylation of mono-, di- and tetra-meso-bromophenyl-substituted porphyrins with the heteroarenes containing "acidic" C-H bonds, such as benzoxazole, benzothiazole and N-methylimidazole was studied in the presence of three alternative catalytic systems: Pd(dba)2/DavePhos/Cs2CO3, Pd(PPh3)4/PivOH/K2CO3 and Pd(OAc)2/Cu(OAc)2/PPh3/K2CO3. The first catalytic system was found to be successful in the reaction with benzoxazole, the second one was less efficient for our purpose, while the third system proved to be most versatile and afforded corresponding mono-, di-, tri- and even tetraarylated derivatives of porphyrins.
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