2<i>H</i>-Pyran-2-one-3-carbothioamide derivatives: Synthesis and reaction with hydrazine hydrate
作者:Malika Makhloufi-Chebli、Maamar Hamdi、Artur M. S. Silva、Olivier Duval、Jean-Jacques Helesbeux
DOI:10.1002/jhet.2
日期:2009.1
synthesized by the reaction of arylisothiocyanates with 4-hydroxy-6-methylpyran-2-one and 4-hydroxycoumarin, respectively. Novel products 3-[bis(arylamino)methylene]-6-methyl-2H,4H-pyran-2,4-diones and N,N′-diaryl-4-hydroxycoumarin-3-carboximidamides have also been obtained in the same reactions. Novel 4-acetoacetyl-3-phenylamino-4,5-dihydro-5H-pyrazol-5-ones were synthesized from the reaction of N-aryl-4