Process for producing 3,4-dihydrocoumarin

Details Process for producing 3,4-dihydrocoumarin Process for producing 3,4-dihydrocoumarin

1991-12-17

1993-06-08

Ivy, C. Warren

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D31120

Patent

active

052181294

ABSTRACT:
A process for producing 3,4-dihydrocoumarin comprising cyclization and dehydrogenation of a 3-(2-cyclohexanoyl)propionic acid ester, in which a reaction mixture obtained by the cyclization and dehydrogenation is washed with an alkali to reduce the dihydrocinnamic acid content of the reaction mixture to 1% by weight or less and/or previously distilling the reaction mixture to remove high-boiling substances, and then subjected to rectification to recover 3,4-dihydrocoumarin. The thus obtained 3,4-dihydrocoumarin has high purity and high quality sufficient for use as a perfume as it is.

REFERENCES:
patent: 3442910 (1989-05-01), Thweatt
Chemical Abstracts, vol. 115, No. 17, Oct. 28, 1991, p. 905, 183103w and 183104x.

Affiliated with

Also associated with

Rating

Process for producing 3,4-dihydrocoumarin does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for producing 3,4-dihydrocoumarin, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for producing 3,4-dihydrocoumarin will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1935265