[Derivates of carbodithiomethyl-carboxycrotonic acids and acetic acid anhydride]. / Badania nad zwiazkami otrzymanymi w reakcji estru metylowego kwasu ditiokarbazynowego z bezwodnikiem citrakonowym. I.

N2-carbodithiomethyl-N1-3-carboxycrotonic acid hydrazide (I) was cyclized with acetic acid anhydride to (II). Unstable compound (II) was found to be converted by action dilute acids into compound (III). The obtained compound (III) was subjected to further reactions for preparing new compounds.

[Study of the interaction of the compounds resulting from the reaction of carbodithiomethyl acid hydrazide with acetic acid. II]. / Badania nad zwiazkami otrzymanymi w reakcji estru metylowego kwasu ditiokarbazynowego z bezwodnikiem citrakonowym. II.

N2-carbodithiomethyl-N1-3-carboxycrotonic acid hydrazide (I) was cyclized with acetic acid to (II) and concentrated sulphuric acid to (III). Unstable compound (II) was found to be converted by action concentrated sulphuric acid into compound (III). The obtained compound (III) was subjected to further reactions for preparing new compound.

Synthesis of new derivatives of thiosemicarbazide.

Reactions of methyl phthalimidodithiocarbamate with secondary amines were described. S-methyl and S-methylenecarboethoxy derivatives news compound were obtained. The reactions S-methyl derivatives with morpholine, piperidine and pyrrolidine were investigated.

Synthesis of new derivatives of 4-hydroxy-(2H)-phthalazinone and phthalazino-1,4-(2H)(3H)-dione.

N1-Phthaloyl-N3-substituted thiosemicarbazide (II-IV) in concentrated sulphuric acid were isomerized. New derivatives of 4-hydroxy-(2H)-phthalazinone and phthalazino-1,4-(2H)(3H)-dione were obtained.