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Ketene dithioacetal derivatives of 1‐phenyl‐3,5‐dioxopyrazolidine. Synthesis and NMR characterization
Author(s) -
Molinari Aurora,
Oliva Alfonso,
Sánchez Lucá,
Feliciano Arturo San
Publication year - 1997
Publication title -
journal of heterocyclic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.321
H-Index - 59
eISSN - 1943-5193
pISSN - 0022-152X
DOI - 10.1002/jhet.5570340434
Subject(s) - ketene , chemistry , carbon 13 nmr , halide , alkyl , dimethylformamide , derivative (finance) , carbanion , organic chemistry , medicinal chemistry , economics , solvent , financial economics
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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