33171-49-2

Basic information

• Product Name: isocampholenic aldehyde
• CAS NO: 33171-49-2
• Molecular Weight: 152.236
• Mol File: 33171-49-2.mol
• Article Data: 12

Chemical Properties

• CAS DataBase Reference: isocampholenic aldehyde(CAS DataBase Reference)
• NIST Chemistry Reference: isocampholenic aldehyde(33171-49-2)
• EPA Substance Registry System: isocampholenic aldehyde(33171-49-2)

Safety Data

• Hazardous Substances Data: 33171-49-2(Hazardous Substances Data)

Upstream product

• 80-56-8 Pinene 
• 79-15-2 N-bromoacetamide 
• 14575-92-9 2,3-epoxy-cis-pinane 
• 18680-27-8 pinanediol 
• 1686-14-2 α-pinene epoxide 
• 1686-14-2 (1R,2R,4S,6R)-2,7,7-trimethyl-3-oxatricyclo[4.1.1.0.^2,4]octane 
• 1686-14-2 2α,3α-epoxypinane 

Relevant articles and documents

Synthesis of Fencholenic Aldehyde from α-pinene Epoxide on Modified Clays

The conditions for isomerization of α-pinene epoxide (2,3-epoxypinane) on modified clays that gave comparatively high contents (33.0%) of fencholenic (iso-campholenic) aldehyde in the product mixture were determined. An effective method for isolating it w

H- and Fe-modified zeolite beta catalysts for preparation of trans-carveol from α-pinene oxide

The isomerisation of α-pinene oxide has been intensively investigated for selective preparation of campholenic aldehyde, a compound used in the synthesis of fragrances. Selective preparation of another product of α-pinene oxide rearrangement, trans-carveol, still remains a challenging task. Trans-carveol is a highly valuable compound used in perfume bases, food flavour compositions and as an active pharmaceutical substance in chemoprevention of mammary carcinogenesis. In the present work zeolite beta with different SiO2/Al2O3 molar ratios was modified by iron, characterised and tested per se and in the modified form for trans-carveol preparation from α-pinene oxide. The isomerisation reaction was carried out in a polar basic solvent N,N-dimethylacetamide at 140 °C. The activities and selectivities of the catalysts were correlated with their acid properties and with the iron content.

Influence of the Br?nsted and Lewis acid sites on the catalytic activity and selectivity of Fe/MCM-41 system

The system Fe2O3/MCM-41, with high iron dispersion, was synthesized in order to introduce Lewis acid sites into the MCM-41 structure. Two calcination atmospheres (inert and oxidant) were used to produce iron nanoclusters with different structural properties. Besides, a silylation treatment was realized on both solids with the aim of neutralizing the Br?nsted acidity associated with the MCM-41 silanol groups. The samples were characterized by atomic absorption spectroscopy, X-ray diffraction at low angles, N2 adsorption, temperature-programmed reduction, Fourier transform infrared spectroscopy, nuclear magnetic resonance of 29Si, and M?ssbauer spectroscopy. The influence of the structural changes of the nanoclusters and the effect of the simultaneous presence of Lewis and Br?nsted acid sites were evaluated studying the product distribution from the α-pinene oxide isomerization reaction. It was determined that the Br?nsted acidity of the Fe/MCM-41 system has not the sufficient acid strength to modify the product distribution which is mainly governed by the Lewis sites.