Reaction of 3-phenyl-5-aminopyrazole with carbon disulfide: A novel synthesis of 3-(3′-phenylpyrazol-5′-yl)-4-phenylpyrazol-2-thione as well as of pyrazolo[3,4-d]thiazole and pyrano[2,3-d]thiazole derivatives

1995 ◽  
Vol 126 (12) ◽  
pp. 1391-1400 ◽  
Author(s):  
R. M. Mohareb ◽  
H. F. Zohdi ◽  
W. W. Wardakhan
1999 ◽  
Vol 23 (1) ◽  
pp. 10-11
Author(s):  
Rafat M. Mohareb ◽  
Suzan I. Aziz ◽  
Nadia I. Abdel-Sayed ◽  
Ahmed H. El-Banna

The reaction of cyanoacetic acid hydrazide with carbon disulfide in basic dimethylformamide afforded the potassium thiocarbamate 2 which underwent ready heterocyclization upon its reaction with α-haloketones to give the thiazole derivatives 4 and 23.


1992 ◽  
Vol 57 (8) ◽  
pp. 1758-1769 ◽  
Author(s):  
Rafat Milad Mohareb ◽  
Nadia Iskander Abdel-Sayed

4-Bromo-3-oxo-2-phenylhydrazono-butyronitrile (II) reacted with thioamides to afford the thiazole derivatives III and VI. Compound II reacted with nucleophilic reagents to afford XIIIa and XIIIb. The reactivity of XIIIa with some chemical reagents was studied to afford pyridazine, thiazole, 1,2,4-triazine derivatives.


1985 ◽  
Vol 16 (29) ◽  
Author(s):  
G. D. KRAPIVIN ◽  
E. B. USOVA ◽  
V. G. KUL'NEVICH

1987 ◽  
Vol 28 (52) ◽  
pp. 6667-6670 ◽  
Author(s):  
C. Alvarez-Ibarra ◽  
E. Dávila ◽  
A. Mateo ◽  
P. Ortiz ◽  
M.L. Quiroga

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