Preparation of 2-methyl-1,5-diaminopentane

Details Preparation of 2-methyl-1,5-diaminopentane Preparation of 2-methyl-1,5-diaminopentane

1974-11-04

1976-04-27

Demers, Arthur P.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

2604658R, 260583P, 2606839, 252477Q, C07C 8511, C07C 8714

Patent

active

039535118

ABSTRACT:
There is disclosed a process for the preparation of 2-methyl-1,5-diaminopentane by a multi-stage hydrogenation of .alpha.-methylene glutaronitrile using as a catalyst a highly dispersed form of nickel in which the first stage hydrogenation is conducted at temperatures ranging from about 20.degree.C to about 50.degree.C and a hydrogen pressure of at least about 14 kilograms per square centimeter and the second stage hydrogenation is conducted at temperatures ranging from about 120.degree.C to about 140.degree.C using a hydrogen pressure of at least about 42 kilograms per square centimeter.

REFERENCES:
patent: 3350455 (1967-10-01), White et al.
patent: 3408397 (1968-10-01), Feldman et al.
Lieber et al., in Advances in Catalysis, Vol. 5 (1953), Academic Press, NY; N. Y., pp. 424-425.

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