Process for the manufacture of cyclohexene derivatives

Details Process for the manufacture of cyclohexene derivatives Process for the manufacture of cyclohexene derivatives

1979-05-21

1981-08-11

Love, Ethel G.

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

Organic compounds

Phosphorus containing

2603405R, 568378, C07F 954

Patent

active

042835593

ABSTRACT:
The compound 6-hydroxy-3-(5-hydroxy-3-methyl-1,3-pentadienyl)-2,4,4-trimethyl-2-cyclohe xen-1-one useful as intermediate for producing the natural coloring agent astaxanthin as well as a method for synthesizing astaxanthin from this compound and synthesizing the compound from 2-hydroxyketo isophorone.

REFERENCES:
patent: 4088689 (1978-05-01), Rosenberger
patent: 4098827 (1978-07-01), Rosenberger
patent: 4111992 (1978-09-01), Rosenberger
patent: 4156090 (1979-05-01), Kienzle
Chem. Abstracts: 88:7127x; 88:170338a (Subject Index, vol. 88, 1978, p. 3733CS).

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