Preparation of phthalaldehydic acid from .alpha.,.alpha.,.alpha.

Details Preparation of phthalaldehydic acid from .alpha.,.alpha.,.alpha. Preparation of phthalaldehydic acid from .alpha.,.alpha.,.alpha.

1975-08-13

1977-02-08

Helfin, Bernard

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260250R, C07C 6304

Patent

active

040072207

ABSTRACT:
High yields of phthalaldehydic acid from .alpha.,.alpha.,.alpha.,.alpha.',.alpha.'-pentachloro-o-xylene can be obtained in an excellent degree of purity if a mixture of said pentachloroxylene and phthalaldehydic acid in water is heated to a temperature between about 80.degree. and about 180.degree. C., and preferably at the boiling temperature of the reaction mixture. The mutual ratio of the reactants is not critical, and may vary within wide ranges, although it is usually preferred to have such a ratio between the said pentachloroxylene and phthalaldehydic acid that for each part by weight of the former at least 0.1 part by weight of the latter is present. Practically, there is no upper limit to the amount of phthalaldehydic acid which may be present, even to a large molecular excess.

REFERENCES:
patent: 2748161 (1956-05-01), Head et al.
patent: 2748162 (1956-05-01), Head et al.
patent: 3624157 (1971-11-01), Inqwalson et al.

Affiliated with

Also associated with

Rating

Preparation of phthalaldehydic acid from .alpha.,.alpha.,.alpha. does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Preparation of phthalaldehydic acid from .alpha.,.alpha.,.alpha., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Preparation of phthalaldehydic acid from .alpha.,.alpha.,.alpha. will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1213200