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Synthesis 2004(10): 1633-1640
DOI: 10.1055/s-2004-829112
DOI: 10.1055/s-2004-829112
PAPER
© Georg Thieme Verlag Stuttgart · New York
2-Aminothiabutadiene as Useful Building Block in the Synthesis of 2-Aminothiopyrans and 2-Aminothiophenes
Further Information
Received
7 April 2004
Publication Date:
23 June 2004 (online)
Publication History
Publication Date:
23 June 2004 (online)

Abstract
We report a reliable and regiocontrolled alternative route to unsubstituted 2-aminothiopyrans and 2-aminothiophenes. These sulfur heterocycles were prepared by reaction of protected aminothiabutadiene 1 with acrylic dienophiles or acceptor-substituted halomethyl compounds. All compounds were fully characterized by IR, HRMS, and 13C and 1H NMR spectroscopy.
Key words
cycloaddition - thiophenes - thiopyrans - heterocycles - alkylations
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