84592-32-5

Basic information

• Product Name: 3-methyl-5-(2,6,6-trimethyl-4-hydroxy-1-cyclohexene-3-carbonyl)-2,4-pentadiene-1-bromotriphenylphosphine
• Synonyms: 3-methyl-5-(2,6,6-trimethyl-4-hydroxy-1-cyclohexene-3-carbonyl)-2,4-pentadiene-1-bromotriphenylphosphine
• CAS NO: 84592-32-5
• Molecular Weight: 575.525
• Mol File: 84592-32-5.mol
• Article Data: 3

Chemical Properties

• CAS DataBase Reference: 3-methyl-5-(2,6,6-trimethyl-4-hydroxy-1-cyclohexene-3-carbonyl)-2,4-pentadiene-1-bromotriphenylphosphine(CAS DataBase Reference)
• NIST Chemistry Reference: 3-methyl-5-(2,6,6-trimethyl-4-hydroxy-1-cyclohexene-3-carbonyl)-2,4-pentadiene-1-bromotriphenylphosphine(84592-32-5)
• EPA Substance Registry System: 3-methyl-5-(2,6,6-trimethyl-4-hydroxy-1-cyclohexene-3-carbonyl)-2,4-pentadiene-1-bromotriphenylphosphine(84592-32-5)

Safety Data

• Hazardous Substances Data: 84592-32-5(Hazardous Substances Data)

Upstream product

• 83020-74-0 (7AS)-7,7a-dihydro-2,2,4,6,6-pentamethyl-1,3-benzodioxol-5-(6H)-one 
• 164293-05-4 2-methyl-4-bromo-2-butenal dimethyl acetal 
• 31516-35-5 4-bromo-2-methyl-2-butene-1-al 
• 603-35-0 triphenylphosphine 
• 5208-93-5 2-vinyl-β-ionol 
• 1432965-13-3 C₂₁H₃₈O₃Si₂ 

Downstream Products

• 472-61-7 (3S,3'S)-astaxanthin 

Relevant articles and documents

Synthetic method of astaxanthin

The invention provides a synthesis method of astaxanthin, and belongs to the technical field of pharmaceutical chemicals, a compound 21 and a compound 22 are firstly prepared, then the compound 21 and the compound 22 are used for synthesizing a compound 5, and then the compound 5 and a compound 6 are used for generating astaxanthin, raw materials are easy to obtain in the whole preparation process, the synthesis process is safe and easy to operate, and the product yield is high; the compound 21 is 4-halogenated-2-methyl-2-butene-1-methylal, the compound 22 is 2, 2, 4, 6, 6-pentamethyl-5, 6, 7, 7a-tetrahydro-5-methylene-1, 3-benzodioxolane, the compound 5 is 3-methyl-5-(2, 6, 6-trimethyl-3-oxo-4-hydroxy-1-cyclohexenyl)-2, 4-pentadienyl triphenyl phosphine halide, and the compound 6 is 2,7-dimethyl-2, 4, 6-octyl trienaraldehyde.

PROCESS FOR THE PREPARATION OF OXOVINYLIONOL AND ITS O-PROTECTED DERIVATIVES

The present invention relates to the preparation of oxovinylionol and its O-protected derivatives of the formula I in which R is hydrogen or an OH protecting group, for example a group Si(Ra)3, by reacting a compound of the general formula II in which R has the meanings given above for formula I, i.e. β-vinyl ionol (formula II, R=hydrogen) or an O-protected derivative thereof (formula II, R═OH protecting group) with an oxidant in the presence of at least one transition metal, where the oxidant comprises at least one oxygen-containing compound which is selected from among hydrogen peroxide and organic hydroperoxides.