54200-76-9

Upstream product

• 54200-75-8 3-Methyl-5-(2,3,6-trimethylphenyl)-2,4-pentadien-1-ol 
• 5758-24-7 bromotriphenylphosphonium bromide 
• 103206-18-4 (E)-4-(2,3,4-Trimethyl-phenyl)-but-3-en-2-one 
• 91662-53-2 [3-methyl-5-(2,3,6-trimethylphenyl)-2-penten-4-ynyl]triphenylphosphonium bromide 
• 54200-88-3 Methyl-3-methyl-5-(2,3,4-trimethylphenyl)-2-trans-4-pentadienoat 

Downstream Products

• 43161-29-1 9-cis-7,8-Didehydroisorenieraten 
• 54244-20-1 <2,7,11-Trimethyl-13-(2,3,6-trimethylphenyl)-2,4,6,8,10,12-tridecahexaen-1-yl>-triphenylphosphoniumbromid 
• 54244-19-8 12'-apo-φ-caroten-12'-al 

Relevant academic research and scientific papers

Catalytic hydrogenation

Compounds of the formula: STR1 wherein R 1 is a 2,6,6-trimethyl-1-cyclohexen-1-yl or 2,3,6-trimethylphenyl group, either of which may be unsubstituted or substituted by a hydroxy group or a protected hydroxy group, R 2 is aryl, and X - is an anionare manufactured by hydrogenating a compound of the formula: STR2 wherein R 1, R 2 and X are as above, in an organic solvent or aqueous-organic solvent in the presence of a nickel-, palladium-, platinum-, cobalt-, rhodium-, iridium-, or ruthenium-containing catalyst.The process is suitable as an intermediate step in carotenoid and retinoid syntheses.