Hydroxycarbonyl derivatives and process for making the same

Details Hydroxycarbonyl derivatives and process for making the same Hydroxycarbonyl derivatives and process for making the same

1990-12-24

1992-03-17

Ivy, C. Warren

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

Organic compounds

Sulfohydroxamate esters or chalcogen analogues thereof

568347, 568351, 568352, C07C33101, C07C 4500

Patent

active

050970631

ABSTRACT:
The present invention relates to a process for the preparation of astaxanthin having the formula ##STR1## comprising the step of oxidizing a dienolether, a dienamine, or a dienolate anion of canthaxanthin with an oxaziridine oxidant to produce an astaxanthin dihemiaminal, and then decomposing the dihemiaminal to produce astaxanthin. The process advantageously involves two less steps than the best known prior art process for the preparation of astaxanthin.
The invention also relates to important intermediates in the preparation of astaxanthin, which is itself an important additive in the fish industry, the most important of which intermediates is the astaxanthin dihemiaminal.

REFERENCES:
patent: 3311656 (1967-03-01), Sarmatis
patent: 3904586 (1975-09-01), Derible et al.
patent: 4088689 (1978-05-01), Rosenberger
patent: 4105855 (1978-08-01), Schulz et al.
patent: 4156190 (1979-05-01), Kienzle
patent: 4204073 (1980-05-01), Kienzle
patent: 4212827 (1980-07-01), Paust et al.
patent: 4245109 (1981-01-01), Mayer et al.
patent: 4283559 (1991-08-01), Broger et al.
patent: 4585885 (1986-04-01), Bernard et al.
patent: 4883887 (1989-11-01), Bernard et al.

Affiliated with

Also associated with

Rating

Hydroxycarbonyl derivatives and process for making 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 Hydroxycarbonyl derivatives and process for making the same, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydroxycarbonyl derivatives and process for making the same will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1477229