C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
260/365.5
C07D 307/60 (2006.01) C07C 51/56 (2006.01) C07C 51/567 (2006.01)
Patent
CA 1229617
Process for the preparation of dimethylmaleic anhydride Abstract of the Disclosure The reaction of maleic acid, fumaric acid and/or maleic anhydride in the presence of N-acylated heterocyclic amidines and at elevated temperature affords dimethylmaleic anhydride in good yield. Catalytic amounts of the amidine employed are sufficient for said reaction.
488579
Baumann Marcus
Breitenstein Werner
Ag Ciba-Geigy
Fetherstonhaugh & Co.
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