Synthesis of 5-hydroxy- and 5-amino-1-tosyl-5-phenyl-3-(2-arylvinyl)-4,5- dihydropyrazoles

Synlett

Volumn , Issue 3, 2005, Pages 485-486

  Kuz'menok, Nina M ^a   Koval'chuk, Tatyana A ^a   Zvonok, Alexander M ^a  

^a BELARUSIAN STATE TECHNOLOGICAL UNIVERSITY   (Belarus)

Author keywords

Epoxy enones; Hydrazones; Rearrangements

Indexed keywords

5 AMINO DELTA2 PYRAZOLINE; 5 HYDROXY DELTA2 PYRAZOLINE; DELTA2 PYRAZOLINE; ETHYLENE OXIDE DERIVATIVE; HYDRAZINE DERIVATIVE; PYRAZOLE DERIVATIVE; TOSYLHYDRAZINE; UNCLASSIFIED DRUG;

ARTICLE; CHEMICAL REACTION; CHEMICAL STRUCTURE; REACTION ANALYSIS; SUBSTITUTION REACTION; SYNTHESIS;

EID: 14644442895     PISSN: 09365214     EISSN: None     Source Type: Journal    
DOI: 10.1055/s-2005-862353     Document Type: Article

References (15)

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8. 2O-benzene (1:3). Further solid pyrazoline 2 was filtered off and purified by recrystallization using EtOH or benzene. The residue mixture was divided on a column and pyrazole 3 and additional pyrazolines 2 were taken.
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13. 3-MeOH. Further solid 5-aminopyrazoline 4 was filtered off or taken as an oil.
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15. 2O from which pyrazole 3 was crystallized.