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Synthesis 2008(21): 3411-3414
DOI: 10.1055/s-0028-1083168
DOI: 10.1055/s-0028-1083168
PAPER
© Georg Thieme Verlag
Stuttgart ˙ New YorkA Facile One-Pot Synthesis of Substituted Pyridine-2,4(1H,3H)-diones from Acyl(carbamoyl)ketene S,S-Acetals
Further Information
Received
26 June 2008
Publication Date:
16 October 2008 (online)
Publication History
Publication Date:
16 October 2008 (online)

Abstract
A facile and efficient one-pot synthesis of substituted pyridine-2,4(1H,3H)-diones has been developed. Subjected to N,N-dimethylformamide dimethyl acetal (DMFDMA) in N,N-dimethylformamide at 120 ˚C, a series of acyl(carbamoyl)ketene S,S-acetals were converted into the corresponding substituted pyridine-2,4(1H,3H)-diones in high yields.
Key words
annulation - N,N-dimethylformamide dimethyl acetal - Michael addition - α-oxoketene S,S-acetals - pyridine-2,4(1H,3H)-diones
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