Process for producing dimethylformamide

Details Process for producing dimethylformamide Process for producing dimethylformamide

1978-12-22

1980-08-19

Demers, Arthur P.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260562R, C07C10336

Patent

active

042183987

ABSTRACT:
Dimethylformamide mg.multidot.produced by reaction of monomethylamine and trimethylamine at a molar ratio of trimethylamine to monomethylamine of 0.1-10, with carbon monoxide in the presence of 1-500 mg. atom of at least one of iodine, bromine, iodides and bromides as a catalyst in term of halogen per one mole of raw material methylamines at a temperature of 100.degree.-350.degree. C. under a pressure of at least 50 kg/cm.sup.2 gage. Dimethylformamide is produced in a very high yield with a high selectivity from monomethylamine and trimethylamine having less demand among three species of methylamines formed from methanol and ammonia.

REFERENCES:
patent: 2677706 (1954-05-01), Giachinu
patent: 3099689 (1963-07-01), Cragg
patent: 3530182 (1970-09-01), Haynes
Aliev et al., Chem. Abstracts 57 (1962), 8413f.
Beckwith, The Chemistry of Amides, Interscience Publishers N.Y., N.Y. 1970, p. 118.

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