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Titanium Reagents for the Synthesis of 2-Substituted Benzo[ b ]thiophenes on the Solid Phase

โœ Scribed by Roberts, Christine F.; Hartley, Richard C.


Book ID
118039506
Publisher
American Chemical Society
Year
2004
Tongue
English
Weight
316 KB
Volume
69
Category
Article
ISSN
0022-3263

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## Abstract A convenient and general approach to the synthesis of 2โ€substituted 3โ€bromobenzofurans and โ€benzothiophenes was developed. The procedure is based on the cyclization of __ortho__โ€substituted arylalkynes in the presence of __N__โ€methylpyrrolidinโ€2โ€one hydrotribromide (MPHT) as a soft and