Method for the manufacture of dimethyl, octyl - or pentyl - para

Details Method for the manufacture of dimethyl, octyl - or pentyl - para Method for the manufacture of dimethyl, octyl - or pentyl - para

1988-12-05

1991-01-08

Gray, Bruce

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

Organic compounds

Carboxylic acid esters

C07C10100

Patent

active

049837540

ABSTRACT:
A method for the manufacture of dimethyl octyl (or pentyl) para-amino benzoic acid is described. The method consists in the carbonylation of para-bromo-dimethyl aniline, in the absence of any promoter, in a reaction system having a pH of above 8 in the presence of an alcohol selected from octanol, pentanol or isomers thereof using a palladium catalyst on an inert support. The reaction is carried out at a temperature in the range of 140.degree. to 200.degree. C. and a pressure of between 1 to 5 atmospheres. The product obtained is characterized by its high purity being substantially free of any impurities.

REFERENCES:
patent: 2640071 (1953-05-01), Leibu
patent: 3403207 (1968-08-01), Kreps
patent: 3988358 (1976-10-01), Heck
patent: 4654436 (1987-03-01), Lane et al.
"Activation of Reducing Agents, Sodium Hydride Containing Complex Reducing Agents . . . ", J. J. Brunet, et al., Journal of Organic Chemistry, vol. 44, No. 13, 1979, p. 2199.

Affiliated with

Also associated with

Rating

Method for the manufacture of dimethyl, octyl - or pentyl - para does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for the manufacture of dimethyl, octyl - or pentyl - para, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for the manufacture of dimethyl, octyl - or pentyl - para will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-935997