REACTIONS OF HYDRAZONOYL HALIDES 39<sup>1</sup>: SYNTHESIS OF SOME NEW TRIAZOLES AND 2,3-DIHYDRO-1,3,4-THIADIAZOLES
作者:Abdou O. Abdelhamid、Ali A. Al-Atoom
DOI:10.1080/10426500490475067
日期:2004.11.1
C-acyl-N-phenyllhydrazonoyl halides 1a–ghave been caused to react with 3-(aminomethylthiomethyl)-2H-chromen-2-one in the presence of triethylamine to give triazoles. Also, C-acyl-N-pyrazolylhydrazonoyl chlorides 13a, breact with alkyl carbodithioates (14or 15) a–mafforded 2,3-dihydro-1,3,4-thiadiazoles in good yields. Structures of the new compounds were elucidated on the basis of elemental analyses
Synthesis of 2,3-dihydro-1,3,4-thiadiazole, thiazole, and triazolo[4,3-a]pyrimidine derivatives from ethyl benzoylacetate
作者:Nora M. Rateb、Abdou O. Abdelhamid
DOI:10.1002/hc.10222
日期:——
Thiophene and thiazole derivatives can be obtained from potassium salt of ethyl 3-oxo-3-phenyl-2-[(phenylamino)thioxomethyl]propanoate and ethyl chloroacetate in N,N-dimethylformamide solution under different conditions. 2,3-Dihydro-1,3,4-thiadiazoles and triazolo[4,3-a]pyrimidine were obtained from reaction of hydrazonoylhalides with each of thioanilide and pyrimidine-2-thione, respectively. Structures
Reactions of Hydrazonoyl Halides 33 1 : Synthesis of Some New 2,3-Dihydro-1,3,4-thiadiazoles Containing Pyrazol-3-yl, Indolin-2-one-2-yl and Indan-1,3-dione-2-yl Moieties
作者:Abdou O. Abdelhamid、Soad M. Abdelgawad、Sohad F. El-Sharnoby
DOI:10.1080/10426500214563
日期:2002.11.1
Somenew2,3-dihydro-1,3,4-thiadiazoles containing pyrazol-3-yl, indolin-2-one-2-yl and indan-1,3-dione-2-yl moieties in a good yields obtained from the reaction of hydrazonoylhalides with thiocarbamate and carbodithioate in ethanolic triethylamine respectively. In contrast, pyrazolylthiourea reacts with hydrazonoylhalides under the same condition afford corresponding hydrazonoyl sulfide derivatives