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A convenient synthesis of 1,4‐dihydro‐4‐oxopyridazino[3,4‐b]quinoxalines by a ring transformation of 1,2‐diazepino[3,4‐ b ]quinoxalines
Author(s) -
Kurasawa Yoshihisa,
Kim Ho Sik,
Kawano Tae,
Katoh Ritsuko,
Takada Atsushi,
Okamoto Yoshihisa
Publication year - 1991
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.5570280134
Subject(s) - chemistry , ring (chemistry) , transformation (genetics) , stereochemistry , medicinal chemistry , organic chemistry , biochemistry , gene
The reaction of the 1,2‐diazepino[3,4‐ b ]quinoxalines 2a,b or 3a,b with N ‐bromosuccinimide/water resulted in ring transformation to give the 1,4‐dihydro‐4‐oxopyridazino[3,4‐ b ]quinoxalines 4a,b , respectively.