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Ketene dithioacetal derivatives of 1-phenyl-3,5-dioxopyrazolidine. Synthesis and NMR characterization

✍ Scribed by Aurora Molinari; Alfonso Oliva; Lucá Sánchez; Arturo San Feliciano

Publisher: Journal of Heterocyclic Chemistry
Year: 1997
Tongue: English
Weight: 213 KB
Volume: 34
Category: Article
ISSN: 0022-152X
DOI: 10.1002/jhet.5570340434

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✦ Synopsis

Abstract

1‐Phenyl‐3,5‐dioxopyrazolidine 1 reacts with carbon disufide and alkyl halides in presence of excess of sodium acetate in dimethylformamide to afford the ketene dithioacetals 3a‐h. The ^13^C chemical shift assignments of these compounds were made on the basis of two‐dimensional nmr studies performed on the N‐methylketene dithioacetal derivative 4.

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