TY  - BOOK
AU  - Mirna Talaat Helmy Saadan
AU  - Fatma Mohamed saleh ali , 
AU  - Hamdi M. Hassaneen , 
TI  - Utility of active halogenated compounds in synthesis of some fused heterocyclic compounds with expected biological activities / 
PY  - 2020///
CY  - Cairo : 
PB  - Mirna Talaat Helmy Saadan , 
KW  - Chloroformazans
KW  - Cycloaddition reaction
KW  - Methyl hydrazinecarbodithioate
N1  - Thesis (M.Sc.) - Cairo University - Faculty of Science - Department of Organic Chemistry; Issued also as CD
N2  - The present dissertation includes the results of the synthesis of new heterocyclic compounds using N,2-diaryldiazene-1-carbohydrazonoyl chlorides and other hydrazonoyl halides. The first part of the thesis concerned with using of N,2-diaryldiazene-1-carbohydrazonoyl chlorides in synthesis of novel 5-phenyldiazenyl-1,3,4-thiadiazole derivatives, 3-phenyldiazenyl spiro heterocycles and 3-phenyldiazenyl-1H-pyrazole derivatives. For this purpose reaction of 2- ((methylthio)carbonthioyl)hydrazones 7 with N,2-diaryldiazene-1-carbohydrazonoyl chlorides 1,2 at room temperature in absolute ethanol in the presence of triethylamine afforded the corresponding 1,3,4-thiadiazoles 11,12 (Scheme 1). Also, the latter products 11,12 were prepared by treatment of 2-hydrazono-3-aryl-5-(aryldiazenyl)-2,3-dihydro-1,3,4-thiadiazoles 9,10 with the appropriate aldehydes and ketones in 2-propanol in the presence of few drops of hydrochloric acid at reflux. The latter products 9,10 were prepared via stirring of methyl hydrazinecarbodithioate 6 with N,2-diaryldiazene-1-carbohydrazonoyl chlorides 1,2 at room temperature in absolute ethanol in the presence of triethylamine (Scheme 1)
UR  - http://172.23.153.220/th.pdf
ER  -