8-hydroxycymene preparation by dehydrogenation

Details 8-hydroxycymene preparation by dehydrogenation 8-hydroxycymene preparation by dehydrogenation

1993-04-06

1994-05-17

Lone, Werren B.

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

Organic compounds

Oxygen containing

568715, 568726, C07C 2900, C07C 2700

Patent

active

053130081

ABSTRACT:
The invention relates to a process for the conversion of 8-hydroxymenthenes into 8-hydroxycymenes by treating the 8-hydroxymenthenes in the vapour phase with an alkaline dehydrogenation catalyst, e.g. palladium on an alkaline support. The process is carried out above 145.degree. C. The hydroxymenthene vapour is preferably passed through the catalyst system at a pressure below 8 kPa and/or with the aid of an inert gas or vapour. Oxygen may be present as a hydrogen acceptor. The process is particularly suitable for converting 8-hydroxy-p-menth-1-ene into 8-hydroxy-p-cymene. The reaction products are of value as intermediates in the preparation of musk fragrance chemicals.

REFERENCES:
patent: 2361532 (1944-10-01), Cox
patent: 2366409 (1945-01-01), Johnston

Affiliated with

Also associated with

Rating

8-hydroxycymene preparation by dehydrogenation does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with 8-hydroxycymene preparation by dehydrogenation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and 8-hydroxycymene preparation by dehydrogenation will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-878550