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Neue kondensierte N‐haltige Heterocyclen aus 3,6‐Dichlor‐4‐pyridazincarbonsäurechlorid
Author(s) -
Ried Walter,
Eichhorn Thomas A.
Publication year - 1988
Publication title -
chemische berichte
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 0009-2940
DOI - 10.1002/cber.19881211124
Subject(s) - chemistry , anthranilic acid , yield (engineering) , medicinal chemistry , chloride , organic chemistry , metallurgy , materials science
Novel Fused N‐Heterocycles Derived from 3,6‐Dichloro‐4‐pyridazinecarbonyl Chloride 3,6‐Dichloro‐4‐pyridazinecarbonyl chloride ( 4 ) reacts with primary amines to yield the N‐containing fused heterocyclic compounds 2, 8 , and 9a, b. 4 forms the pyridazino‐oxadiazepines 7a – d with the in situ generated hydroxyguanidines 6a – d . The diazocinedione 1 is obtained by reaction of 3,6‐dichloro‐4‐pyridazinecarboxamide ( 3 ) with anthranilic acid methyl ester.