83020-78-4

Upstream product

• 83020-76-2 (3'E)-4-hydroxy-4-(5'-hydroxy-3'-methyl-3'-penten-1'-inyl)-3,5,5-trimethyl-2-cyclohexen-1-on 
• 83020-77-3 (1'E,3'E)-4-(5'-hydroxy-3'-methyl-1',3'-pentadienyl)-3,5,5-trimethyl-2-cyclohexen-1-on 
• 80713-62-8 5-(1-methoxy-1-methylethoxy)-3-methyl-3E-penten-1-yne 
• 14203-64-6 7,9,9-trimethyl-1,4-dioxa-spiro[4.5]dec-6-en-8-one 
• 603-35-0 triphenylphosphine 
• 83020-84-2 4-((1E,3E)-5-Chloro-3-methyl-penta-1,3-dienyl)-3,5,5-trimethyl-cyclohex-2-enone 
• 3536-96-7 vinylmagnesium chloride 
• 67-64-1 acetone 
• 83020-88-6 4,12,12-trimethyl-1,7,10-trioxadispiro<2.2.4.2>dodec-4-en 
• 83020-82-0 4-Hydroxy-4-[(E)-5-(1-methoxy-1-methyl-ethoxy)-3-methyl-pent-3-en-1-ynyl]-3,5,5-trimethyl-cyclohex-2-enone 

Downstream Products

• 28840-14-4 3,7,12,16-tetramethyl-1,18-bis(2,6,6-trimethyl-4-oxo-2-cyclohexen-1-yl)-1,3,5,7,9,11,13,15,17-octadecanonaene 
• 143077-43-4 3-oxo-12'-apo-ε-caroten-12'-al 
• 476342-34-4 3'-hydroxy-ε,ε-carotene-3-one 
• 62682-66-0 3-hydroxy-12'-apo-ε-carotene-12'-al 
• 23984-55-6 (3R,6'RS)-3-hydroxy-β,ε-caroten-3'-one 
• 14656-56-5 3,3'-di-keto-β-carotene 
• 116-30-3 4',5'-didehydro-4,5'-retro-β,β-carotene-3,3'-dione 

Relevant academic research and scientific papers

Technische Verfahren zur Synthese von Carotinoiden und verwandten Verbindungen aus 6-Oxo-isophoron. VI. Synthese von Rhodoxanthin und (3RS,3'RS)-Zeaxanthin; Zugaenge zur C15-Ringkomponente ueber 3-Oxo-jonon-Derivative

The C15-ring component 4, key intermediate of a new scheme for the synthesis of rhodoxanthin (1) and (3RS,3'RS)-zeaxanthin (3), has been synthesized starting from 6-oxo-isophorone (7) via 3-oxo-cyclocitral and 3-oxo-ionone derivatives.

Process for the manufacture of cyclohexene derivatives

A novel process for the manufacture of cyclohexene derivatives which are suitable as intermediates for the manufacture of rhodoxanthin or zeaxanthin, as well as a process for the manufacture of rhodoxanthin or of zeaxanthin itself. The invention is also concerned with a novel starting material and novel intermediates in this process.