Kumagai Y, Kobayashi A, Nakamura K, Yoshida S. Facile synthesis of dibenzothiophene
S-oxides from sulfinate esters.
Chem Commun (Camb) 2024;
60:1611-1614. [PMID:
38230531 DOI:
10.1039/d3cc05703h]
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Abstract
An efficient method to prepare dibenzothiophene S-oxides is disclosed. Suzuki-Miyaura cross-coupling of 2-bromoaryl sulfinate esters with arylboronic acids selectively at the bromo group followed by electrophilic cyclization of the resulting sulfinate ester moiety provides diverse dibenzothiophene S-oxides. Further transformations including Pummerer-type C-H propargylation and aryne reactions realize to synthesize highly functionalized dibenzothiophene derivatives.
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