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Synthesis 2007(22): 3469-3472
DOI: 10.1055/s-2007-990849
DOI: 10.1055/s-2007-990849
PAPER
© Georg Thieme Verlag Stuttgart · New York
Aqueous-Phase One-Pot Synthesis of 2-Aminothiazole- or 2-Aminoselenazole-5-carboxylates from β-Keto Esters, Thiourea or Selenourea, and N-Bromo-succinimide under Supramolecular Catalysis
Further Information
Received
15 June 2007
Publication Date:
29 October 2007 (online)
Publication History
Publication Date:
29 October 2007 (online)
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Abstract
2-Amino-4-alkyl- and 2-amino-4-arylthiazole-5-carboxylates and their selenazole analogues were synthesized by α-halogenation of β-keto esters with N-bromosuccinimide, followed by cyclization with thiourea or selenourea, respectively, in the presence of β-cyclodextrin in water at 50 °C.
Key words
thiazoles - selenazoles - β-keto esters - N-bromosuccinimide - cyclodextrins
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