Perillyl acetate is a fragrancecompound that was prepared by the reaction of β-pinenoxide with acetic anhydride and using acetic acid as an acidcatalyst. Several selected catalysts were tested (homogenous: phosphoric acid, boric acid, acetic acid, and citric acid; heterogeneous: zeolite USY, SSA, and montmorillonite K-10) and the reaction conditions optimized for this reaction. The yield 78.7 % of
PROCESS FOR PREPARING 4-ISOPROPYLCYCLOHEXYLMETHANOL
申请人:Stecker Florian
公开号:US20110207968A1
公开(公告)日:2011-08-25
The present invention relates to a process for preparing 4-isopropylcyclohexylmethanol (IPCHM) from para-cymene. The process for preparing 4-isopropylcyclohexylmethanol (IPCHM) comprises an electrochemical process for preparing a mixture of 4-isopropylbenzaldehyde dimethyl acetal and 4-(1-alkoxy-1-methylethyl)benzaldehyde dimethyl acetal, and intermediates passed through in the process, a hydrolysis step to form the corresponding benzaldehydes and a hydrogenation of this mixture to form 4-isopropylcyclohexylmethanol (IPCHM).
CONTINUOUS METHOD FOR PRODUCING SUBSTITUTED CYCLOHEXYLMETHANOLS
申请人:Mirk Daniela
公开号:US20110251439A1
公开(公告)日:2011-10-13
The present invention relates to a continuous process for preparing para-alkyl-substituted cyclohexylmethanols, especially 4-isopropylcyclohexylmethanol, by catalytically hydrogenating the corresponding aldehydes or ketones in the presence of hydrogen and in the presence of a catalyst which comprises, as an active metal, ruthenium applied to a support, the support comprising Al
2
O
3
and/or SiO
2
, and the catalyst being used in the form of a fixed bed catalyst in a hydrogenation reactor or in a plurality of hydrogenation reactors connected in series.
[EN] A PROCESS FOR THE PREPARATION OF N-[[TRANS-4-(1-METHYLETHYL)CYCLOHEXYL]CARBONYL]-D-PHENYLALANINE<br/>[FR] PROCÉDÉ POUR LA PRÉPARATION DE N-[[TRANS-4-(1-MÉTHYLÉTHYL)CYCLOHEXYL]CARBONYL]-D-PHÉNYLALANINE
申请人:NEULAND LAB LTD
公开号:WO2010106550A2
公开(公告)日:2010-09-23
The present invention is directed to an novel, industrially viable and cost effective process for preparation of substantially pure N-[[trans-4-(l-methylethyl) cyclohexyl] carbonyl]-D- phenylalanine commonly known as Nateglinide.
Alicyclic compounds, their use and process for preparing same
申请人:Firmenich S.A.
公开号:US03993604A1
公开(公告)日:1976-11-23
Use of alicyclic compounds, some of which are new, as odor-modifying ingredients for manufacturing perfumes, perfumed products or synthetic essential oils, and as flavor-modifying ingredients for the manufacture of artificial flavors or for the aromatization of foodstuffs, animal feeds, pharmaceutical preparations or tobacco products. Process for preparing said alicyclic compounds.