Organic compounds -- part of the class 532-570 series – Organic compounds – Amino nitrogen containing
Patent
1997-06-12
1998-12-15
Kumar, Shailendra
Organic compounds -- part of the class 532-570 series
Organic compounds
Amino nitrogen containing
424 9452, 564142, C07C23102, C07C23365
Patent
active
058499539
ABSTRACT:
This invention refers to a new process for the synthesis of amino!-2,4,6-triiodo-1,3-benzendicarboxamide, of formula (III), ##STR1## starting from 5-amino-2,4,6-triiodo-1,3-benzendicarboxylic acid dichloride characterized by a new step of chromatographic purification through resins of lic acid dichloride, which enables the direct conversion to the compound of formula (III), without preventive isolation.
REFERENCES:
patent: 4001323 (1977-01-01), Felder et al.
patent: 4352788 (1982-10-01), Felder et al.
patent: 5362905 (1994-11-01), Villa et al.
Fructamine S.p.A.
Kumar Shailendra
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