72172-57-7

Basic information

• Product Name: 2,6-Octadienal, 2,7-dimethyl-, (2E)-
• CAS NO: 72172-57-7
• Molecular Formula: C10H16O
• Molecular Weight: 152.236
• Mol File: 72172-57-7.mol
• Article Data: 4

Chemical Properties

• CAS DataBase Reference: 2,6-Octadienal, 2,7-dimethyl-, (2E)-(CAS DataBase Reference)
• NIST Chemistry Reference: 2,6-Octadienal, 2,7-dimethyl-, (2E)-(72172-57-7)
• EPA Substance Registry System: 2,6-Octadienal, 2,7-dimethyl-, (2E)-(72172-57-7)

Safety Data

• Hazardous Substances Data: 72172-57-7(Hazardous Substances Data)

Upstream product

• 32663-38-0 geraniol 
• 556-82-1 3-methyl-2-buten-1-ol 
• 73658-21-6 Geraniumsaeureethylester 
• 764-32-9 5-methyl-4-hexenal 

Downstream Products

• 209004-37-5 (E)-1-Cyclohex-1-enyl-2,7-dimethyl-octa-2,6-dien-1-one 
• 68826-40-4 (E)-4-methyl-1-(2',6',6'-trimethylcyclohex-1'-en-1'-yl)pent-1-en-3-one 
• 432-25-7 2,6,6-trimethylcyclohex-1-enecarbaldehyde 
• 14505-74-9 α-cyclocitral 

Relevant articles and documents

A Practical Domino-Claisen–Cope Sequence in the Synthesis of New Blooming Citrus and Potent Floral Rose Alcohols

Fifty years after its first discovery by Alan Francis Thomas, we describe a versatile, metal and pressure-free domino-Claisen–Cope rearrangement using the readily available α,β-unsaturated aldehydes 5 or their acetals 5′ and allylic alcohols 6. This transformation provides a convenient access to a large number of radiant citrus and floral rosy odorants. Odor profiles of novel floral rosy and citrus alcohols 13, 14, and 16 were studied. Compound 14ba has a floral, rosy, geranium-like character and shows unique performance and diffusiveness. Compound 16ba has a clear main citrus odor character with a clean green grapefruit/rhubarb connotation. Both odorants have been successfully introduced to perfumery recently as Rosyfolia (14ba) and Pomelol (16ba).

Preparation of α,β-unsaturated aldehydes and 2,7-dimethyl-octa-2,6-dienal

A process for the preparation of α,β-unsaturated aldehydes by reacting a 1,4-diacyloxyalk-2-ene, which is substituted in the 2-position by an aliphatic radical, with water in the presence of an acid, and of 2,7-dimethylocta-2,6-dienal.