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Synthesis 1988; 1988(2): 155-157
DOI: 10.1055/s-1988-27501
DOI: 10.1055/s-1988-27501
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A Simple Synthesis of 2-Substituted 1-Benzothiophenes and 3- Substituted 2H-1-Benzothiopyrans
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Publication Date:
20 August 2002 (online)
The reaction of (2-mercaptophenyl)methyltriphenylphosphonium bromide (2) with acyl chlorides or α-haloketones in the presence of a base gives rise to 2-substituted 1-benzothiophenes 4 and 3-substituted 2H-1-benzothiopyrans 6 (2H-1-benzothiines), respectively, in moderate to good yields.