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Synthesis 1994; 1994(3): 252-254
DOI: 10.1055/s-1994-25451
short paper
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2,4,5-Triarylthiobenzophenones by Ring Transformation of 2,4,6-Triarylthiopyrylium Salts with Arylacetaldehydes

T. Zimmermann*
  • *Wissenschaftler-Integrations-Programm, Koordinierungs- und Aufbau-Initiative für die Forschung in den neuen Bundesländern e. V., Permoserstraße 15, D-04303 Leipzig, Germany
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Publication Date:
27 September 2002 (online)

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2,4,6-Triarylthiopyrylium salts 1 and arylacetaldehydes 2 react in the presence of sodium methoxide in methanol by a 2,5-[C4 + C2] ring transformation to give 2,4,5-triarylthiobenzophenones 3. This ring transformation offers a new and efficient access to aryl substituted thiobenzophenones.

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