98633-46-6

Basic information

• Product Name: dihydro-α-ionone
• Synonyms: dihydro-α-ionone
• CAS NO: 98633-46-6
• Molecular Weight: 194.317
• Mol File: 98633-46-6.mol
• Article Data: 5

Chemical Properties

• CAS DataBase Reference: dihydro-α-ionone(CAS DataBase Reference)
• NIST Chemistry Reference: dihydro-α-ionone(98633-46-6)
• EPA Substance Registry System: dihydro-α-ionone(98633-46-6)

Safety Data

• Hazardous Substances Data: 98633-46-6(Hazardous Substances Data)

Upstream product

• 4350-74-7 (1R,6S)-2,2,6-trimethylcyclohexyl carbaldehyde 
• 67-64-1 acetone 
• 79-77-6 (E)-β-ionone 
• 13149-24-1 1-Aethoxymethyl-2,2,6-trimethyl-cyclohexanol-⁽¹⁾ 

Downstream Products

• 79385-10-7 4-(3-chloro-2-methylidene-6,6-dimethyl-cyclohex-1-yl)-butan-2-one 
• 79385-11-8 4-(5-bromo-6-methylene-2,2-dimethylcyclohexyl)-2-butanone 
• 6138-85-8 tetrahydroionone 
• 13155-68-5 (+/-)-4t-(2.2.6c-trimethyl-cyclohex-r-yl)-but-3-en-2-one-(2.4-dinitro-phenylhydrazone) 
• 204063-31-0 (E)-4-Oxo-2-[(E)-2-(2,2,6-trimethyl-cyclohexyl)-vinyl]-but-2-enoic acid methyl ester 

Relevant articles and documents

A convenient, efficient method for conjugate reductions using catalytic quantities of Cu(I)

Exposure of enones and enals to either Bu3SnH or PhSiH3 in the presence of ≤ 5 mol % [(Ph3P)CuH]6 leads to products of 1,4-hydride delivery in good yields.

The liquid-phase catalytic hydrogenation of β-ionone has been carried out using Pd/C catalyst

The reaction products obtained upon reduction of β-ionone were cis-dihydroionone, dihydro-β-ionone, tetrahydroionone, dihydro-α-ionone and small quantities of alcohols.Selectivity towards each product is not affected by the reaction conditions such as temperature (261-318 K), hydrogen pressure (0.11-0.53 MPa), β-ionone concentration (0.28-2.45 M) and the nature of the solvent.Under our working conditions, the order of the reaction with respect to the substrate is negative and the process is half an order in hydrogen pressure.The catalytic hydrogenation of α-ionone has been carried out in the same conditions and the selectivity of dihydro-α-ionone reaches 76percent.It appears that the conjugate ability of the system in β-ionone is responsible for the selectivity to the cis-dihydroionone (66percent) obtained during the catalytic hydrogenation of the second product. - Key words: catalytic hydrogenation / β-ionone / α-ionone / selectivity / Pd/C / apparent activation energy

Process for producing irone

Provided is a process which comprises conducting the ring-closure of pseudoirone in the presence of chlorosulfonic acid, which is inexpensive, to obtain in a high yield the α-cis form of irone, which has nearly the same fragrance as that of natural irones.