Ketene dithioacetal derivatives of 1-phenyl-3,5-dioxopyrazolidine. Synthesis and NMR characterization |
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Authors: | Aurora Molinari,Alfonso Oliva,Luc S nchez,Arturo San Feliciano |
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Affiliation: | Aurora Molinari,Alfonso Oliva,Lucá Sánchez,Arturo San Feliciano |
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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 13C 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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