Isomerization of cyclohexylamines to produce their thermodynamic

Details Isomerization of cyclohexylamines to produce their thermodynamic Isomerization of cyclohexylamines to produce their thermodynamic

1993-03-30

2000-09-19

Barts, Samuel

Organic compounds -- part of the class 532-570 series

Organic compounds

Amino nitrogen containing

C07C20900

Patent

active

061214930

ABSTRACT:
This invention relates to an isomerization process wherein hydrogenated aromatic amines are substantially isomerized to their thermodynamic form. These hydrogenated aromatic amines are presented by the formulas: ##STR1## wherein R is hydrogen or C.sub.1-6 aliphatic, R1 and R2 are hydrogen or C.sub.1-6 aliphatic, A is C.sub.1-4 or NH; n is 0-2, x is 1-3 and y is 1 to 2 except the sum of the y groups in Formula I may be 1.
The improvement in the process comprises using a catalytic system comprising cobalt preferably in combination with another Group VIII metal selected from rhodium, ruthenium, platinum, and palladium and the metal, copper. Preferably the catalyst comprises cobalt in combination with rhodium or ruthenium wherein the weight ratio of cobalt to rhodium or ruthenium, calculated on metal content, is from about 0.2 to 100 weight parts cobalt per weight part rhodium or ruthenium and the isomerization is carried out in the presence of hydrogen.

REFERENCES:
patent: 2511028 (1950-06-01), Whitman
patent: 2606924 (1952-08-01), Whitman
patent: 2606925 (1952-08-01), Whitman
patent: 2606928 (1952-08-01), Barkdoll et al.
patent: 3155724 (1964-11-01), Arthur
patent: 3347917 (1967-10-01), Arthur
patent: 3445516 (1969-05-01), Cross
patent: 3520928 (1970-07-01), Greco
patent: 3558703 (1971-01-01), Adam et al.
patent: 3591635 (1971-07-01), Farrissey et al.
patent: 3634512 (1972-01-01), Peebeu et al.
patent: 3679746 (1972-07-01), Brake
patent: 3711550 (1973-01-01), Brake
patent: 3766272 (1973-10-01), Brake
patent: 3829490 (1974-08-01), Mueller et al.
patent: 4020104 (1977-04-01), Richter
patent: 4503249 (1985-03-01), Nowack et al.
patent: 4946998 (1990-08-01), Casey
Kirk-Othmer Encyclopedia of Chemical Technology, 3d ed., 1979, v.5. month unavailable.
Kirk-Othmer Encyclopedia of Technology, 3d ed., vol. 5, pp. 39-40 (1979).

Affiliated with

Also associated with

Rating

Isomerization of cyclohexylamines to produce their thermodynamic does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Isomerization of cyclohexylamines to produce their thermodynamic, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Isomerization of cyclohexylamines to produce their thermodynamic will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1074855