EXTRUSION OF SULFUR IN THE REACTIONS OF HYDRAZINE HYDRATE WITH 5-(2-ARYL-2-OXOETHYLIDENE)-3-(2-METHOXY-PHENYL)-2-THIOXOTHIAZOLIDIN-4-ONES

Authors

NADIA EL-AASAR, Department of Chemistry, Faculty of Science, Ain Shams University, Abbassia, Cairo, Egypt.

Corresponding Author

EL-AASAR, NADIA

Document Type

Original Article

Subject Areas

Chemistry

Keywords

sulfur; HYDRAZINE HYDRATE

Abstract

Reactions of 3-substituted-5-(2-aryl-2-oxoethylidene)-2-thioxothiazolidin-4-ones 2a, b with 2.5 equiv. of hydrazine hydrate were carried out with reflux and/or at room temperature. Both of these conditions gave 4-(3-aryl-4,5-dihydro-1H-pyrazole-5-carbonyl)-4-(2-methoxyphenyl)thiosemicarbazides 3a, b and4-(2-methoxyphenyl) thiosemicarbazide 4. Inaddition, the 6-(2-oxo-2-phenylethyl)-4-(2-methoxyphenyl)-3-thioxo-1,2,4-triazinan-5-one 5a was obtained from 2a.The successful isolation of sulfur from these reactions was the key to rationalize the above mentioned transformations. The structures of all the products were evidenced by microanalytical and spectral data.

How to Cite This Article

EL-AASAR, NADIA (2008) "EXTRUSION OF SULFUR IN THE REACTIONS OF HYDRAZINE HYDRATE WITH 5-(2-ARYL-2-OXOETHYLIDENE)-3-(2-METHOXY-PHENYL)-2-THIOXOTHIAZOLIDIN-4-ONES," Al-Azhar Bulletin of Science: Vol. 19: Iss. 2, Article 19.
DOI: https://doi.org/10.21608/absb.2008.10821