Facile bromination of the benzene ring during the cyclisation of the1H-3-methyl-4-ethoxycarbonyl-5-arylidenehydrazonopyrazoles to the3-substituted-aryl-1H-6-methyl-7-ethoxycarbonyl-pyrazolo[3,2-c]-s-triazoles

Arkivoc

Volumn 2002, Issue 2, 2002, Pages 133-141

  Csunderlik, Carol ^a   Bercean, Vasile ^a   Peter, Francisc ^a   Badea, Valentin ^a  

^a POLITEHNICA UNIVERSITY OF TIMISOARA   (Romania)

Author keywords

5 arylidenehydrazonopyrazoles; Azomethyne dyes; Bromination; Hydrolysis decarboxylation; Pyrazolo 3,2 c s triazoles

Indexed keywords

3 (3 HYDROXY 2,4,6 TRIBROMO)PHENYL 6 METHYLPYRAZOLO[3,2 C] S TRIAZOLE; 3 (3,5 DIBROMO 2 HYDROXY)PHENYL 6 METHYLPYRAZOLO[3,2 C] S TRIAZOLE; 3 (3,5 DIBROMO 2,4 DIHYDROXY)PHENYL 6 MEHTYLPYRAZOLO[3,2 C] S TRIAZOLE; 3 (3,5 DIBROMO 4 HYDROXY)PHENYL 6 METHYLPYRAZOLO[3,2 C] S TRIAZOLE; 3 (5 BROMO 2 METHOXY)PHENYL 6 METHYLPYRAZOLO[3,2 C] S TRIAZOLE; BENZENE; BROMINE; PYRAZOLE DERIVATIVE; TRIAZOLE DERIVATIVE; UNCLASSIFIED DRUG;

ARTICLE; BROMINATION; CYCLIZATION; DECARBOXYLATION; HYDROLYSIS;

EID: 3242773742     PISSN: 14246376     EISSN: None     Source Type: Journal    
DOI: None     Document Type: Article

References (7)

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3. Nishijima, T.; Onodera, K. U.S. Pat. 4,752,561 1988 Int. Cl. G03C1/08
4. Katoh, K.; Kawakatsu, S.; Masuda, K.; Miyagi, K.; Nakayama, N.; Kimura, T. U.S. Pat. 4,581,326 1986 Int. Cl. G03C7/26
5. Abdel Sayed, N. I. Egypt. J. Chem. 1999, 42, 2175
6. Pizey, J. S. Synthetic Reagents v.3, John Wiley & Sons Inc. New-York 1977 pp 319
7. Bercean, V. N. Ph. D.Thesis 1998 University "Politehnica" of Timisoara