52056-49-2

Upstream product

• 2520-60-7 2-(3-methylbut-2-en-1-yl)cyclopentanone 
• 30079-93-7 2-allylcyclopentanone 
• 25296-22-4 trans-1,4-dibromo-2-pentene 
• 120-92-3 cyclopentanone 

Downstream Products

• 41031-88-3 (Z)-2-(2-pentenyl)-2-cyclopenten-1-one 

Relevant academic research and scientific papers

PROCESS FOR PREPARING PERFUMING INTERMEDIATE

The present invention relates to the field of organic synthesis and more specifically it concerns a process for preparing compound of formula (I) by a cross metathesis reaction. Said compound of formula (I) is valuable new chemical intermediate for producing perfuming ingredients and is also part of the present invention.

Process for preparing unsaturated spiranic derivatives

Process for preparing unsaturated spiranic derivatives of formula STR1 wherein index n represents integer 1 or 2 and wherein symbol R defines a lower alkyl radical, starting from the corresponding cycloalkanone via an addition thereto of a dihalo-alkene of formula STR2 wherein symbol R possesses the above-indicated meaning and X represents a halogen atom.