67801-15-4

Usage

Flammability and Explosibility

Nonflammable

InChI:InChI=1/C14H22O/c1-10(12(3)15)6-8-13-9-7-11(2)14(13,4)5/h6-8,10,13H,9H2,1-5H3/b8-6-

Upstream product

• 4501-58-0 campholenyc aldehyde 
• 74-87-3 methylene chloride 
• 74-83-9 methyl bromide 
• 78-93-3 butanone 

Downstream Products

• 67801-20-1 3-methyl-5-(2,2,3-trimethyl-3-cyclopenten-1-yl)-4-penten-2-ol 

Relevant academic research and scientific papers

Preparation of 3-methyl-5-(2,2,3-trimethyl-3-cyclopenten-1-yl)pent-4-en-2-ol

The invention provides a preparation method of 3-methyl-5-(2,2,3-trimethyl-3-cyclopenten-1-yl)-pent-4-en-2-ol. The preparation method comprises the following steps: firstly, converting a compound of astructure of a formula (III) shown in the description into a compound of a structure of a formula (IV) shown in the description, and further converting the compound of the structure of the formula (IV) into a compound of a structure of a formula (I) shown in the description. According to the preparation, the compound of the structure of the formula (III) is subjected to isomerization and methylation in a same reaction system to obtain the compound of the structure of the formula (IV), so that the obtained product is high in purity and high in yield, in addition, steps of reactions are simplified, and industrial production can be achieved.

Process for making intermediates for fragrance components from α-campholenic aldehyde

A two-step aldol condensation process is disclosed. α-Campholenic aldehyde (ACA) and methyl ethyl ketone (MEK) react in the presence of a base under conditions effective to produce a mixture comprising a high yield of ketol condensation products. Dehydration of the ketols in the presence of an organic sulfonic acid provides unsaturated ketones that are valuable intermediates for fragrance components for synthetic sandalwood products. Compared with the usual one-step, base-catalyzed approach, the two-step process increases the yield of all condensation products and maximizes production of the most valuable ketone isomers.

Optical isomers of derivatives of campholenic aldehyde

The present invention relates to a mixture of the 4 diastereomers 1'S,2R,3S; 1'S,2S,3R; 1'S,2S,3S and 1'S,2R,3R of (E)-3-methyl-5-(2,2,3-trimethylcyclopent-3-en-1-yl)pent-4-en-2-ol, a mixture of the 4 diastereomers 1'R,2S,3R; 1'R,2R,3S; 1'R,2R,3R and 1'R,2S,3S of (E)-3-methyl-5-(2,2,3-trimethylcyclopent-3-en-1-yl)pent-4-en-2-ol and to (1'S,2S,3R)-(E)-3-methyl-5-(2,2,3-trimethylcyclopent-3-en-1-yl)pent-4-en-2-ol, (1'R,2S,3R)-(E)-3-methyl-5-(2,2,3-trimethylcyclopent-3-en-1-yl)pent-4-en-2-ol and to a process for the manufacture of these compounds or mixtures. Further, the invention is related to any isomer mixture of (E)-3-methyl-5-(2,2,3-trimethylcyclopent-3-en-1-yl)pent-4-en-2-ol enriched in one or both of the compounds or mixtures, especially to an odorant composition containing any isomer mixture of (E)-3-methyl-5-(2,2,3-trimethylcyclopent-3-en-1-yl)pent-4-en-2-ol enriched in one or both of the above compounds or mixtures, and to the use of any one of the compounds or mixtures as odorants.