A facile synthesis of novel 1‐aryl‐1 H ‐pyrazolo[3,4‐ b ]quinoxalines | Zendy

Kurasawa Yoshihisa | Zendy; Yamazaki Kaoru | Zendy; Tajima Setsuko | Zendy; Okamoto Yoshihisa | Zendy; Takada Atsushi | Zendy

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A facile synthesis of novel 1‐aryl‐1 H ‐pyrazolo[3,4‐ b ]quinoxalines

Author(s) -

Kurasawa Yoshihisa,

Yamazaki Kaoru,

Tajima Setsuko,

Okamoto Yoshihisa,

Takada Atsushi

Publication year - 1986

Publication title -

journal of heterocyclic chemistry

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.321

H-Index - 59

eISSN - 1943-5193

pISSN - 0022-152X

DOI - 10.1002/jhet.5570230158

Subject(s) - chemistry , aryl , quinoxaline , base (topology) , dimethylformamide , medicinal chemistry , chloride , phosphoryl chloride , organic chemistry , solvent , alkyl , mathematical analysis , mathematics

The reactions of 3‐methyl‐2‐oxo‐1,2‐dihydroquinoxaline 3 with chlorophenyl diazonium salts afforded the hydrazones 4a‐c , whose chlorinations with phosphoryl chloride gave the dichlorides 5a‐c . Refluxing of the dichlorides 5a‐c and base in N,N ‐dimethylformamide provided the 1‐aryl‐1 H ‐pyrazolo[3,4‐ b ]quinoxalines 6a‐c .

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