Trimethylcatechol diester and a method for producing the same

Details Trimethylcatechol diester and a method for producing the same Trimethylcatechol diester and a method for producing the same

1997-12-17

1999-09-21

Barts, Samuel

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

Organic compounds

Carboxylic acid esters

560 86, C07C 6934

Patent

active

059556285

ABSTRACT:
This method provides a novel trimethylcatechol diester, i.e. 3,4,5-trimethylcatechol diester, at a high yield by reacting 2,6,6-trimethylcyclohexe-2-en-1,4-dione with an acylating agent in the presence of an acid catalyst. The acylating agent includes a C.sub.2-4 carboxylic acid anhydride (e.g. acetic anhydride) and a C.sub.2-4 carboxylic acid halide (e.g. acetyl chloride). The catalyst includes a protonic acid and a Lewis acid. Use of a polar solvent (e.g. halogenated hydrocarbon), as the reaction catalyst, results in an enhanced efficiency in the production of the object compound.

REFERENCES:
patent: 3624134 (1971-11-01), Kablaoui
Frimer et al., J. Org. Chem., 59, 1831-1834 (1994).
Derwent online printout, AN-72-24515, Abstract of DE 2149159, 1972.

Affiliated with

Also associated with

Rating

Trimethylcatechol diester and a method for producing the same does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Trimethylcatechol diester and a method for producing the same, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Trimethylcatechol diester and a method for producing the same will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-81924