四氢吡咯 、 2,6,6-三甲基二环[3.3.1]庚烷-3-羧醛 在
甲酸 作用下,
以
甲酸 为溶剂,
125.0~127.0 ℃
、88.87 kPa
条件下,
反应 12.0h,
以31.8 g of (+)-3-pyrrolidinomethylpinane boiling at from 125° to 127° C/5 mm Hg are obtained的产率得到(+)-3-pyrrolidinomethylpinane
Rhodium catalyzed hydroformylation of β-pinene and camphene: effect of phosphorous ligands and reaction conditions on diastereoselectivity
作者:Humberto J.V. Barros、Maria L. Ospina、Eduardo Arguello、William R. Rocha、Elena V. Gusevskaya、Eduardo N. dos Santos
DOI:10.1016/s0022-328x(03)00098-6
日期:2003.4
effect of phosphorus ligands on the rhodium catalyzed hydroformylation of β-pinene and camphene has been studied. In unmodified systems, β-pinene undergoes a fast isomerization to α-pinene. At longer reaction times and higher temperatures, the isomerization equilibrium is shifted resulting in the 80% chemoselectivity for β-pinene hydroformylation products (97% trans). The addition of various diphosphines
[EN] PHOTOLABILE ACETAL AND KETAL COMPOUNDS FOR THE CONTROLLED RELEASE OF ACTIVE VOLATILE CARBONYL COMPOUNDS<br/>[FR] COMPOSÉS ACÉTALS ET CÉTALS PHOTOLABILES POUR LA LIBÉRATION CONTRÔLÉE DE COMPOSÉS DE CARBONYLE VOLATILS ACTIFS
申请人:FIRMENICH & CIE
公开号:WO2016116420A1
公开(公告)日:2016-07-28
The present invention relates to a delivery system based on photosensitive acetal or ketal compounds capable of liberating upon exposure to light an active volatile carbonyl compound in a controlled manner from a surface into the surrounding. The delivery system can be used to release active substances such as flavors, fragrances, malodor counteractants, insect attractants or insect repellents. The invention also relates to the use of said acetal or ketal compounds in perfumery, as well as in perfuming compositions or perfumed consumer articles.
Enantioselective reduction of ketones with a silane agent/metal compound/chiral ligand system
申请人:Firmenich SA
公开号:US06392103B1
公开(公告)日:2002-05-21
A process for the enantioselective reduction of prochiral ketones to chiral alcohols by (a) the reaction of a prochiral ketone with a silane agent, which is present in a stoichiometric quantity, in the presence of a catalyst derived from a Zn, Co or Cd precursor compound and from a chiral amine, imine, alcohol or amino alcohol ligand; (b) the hydrolysis of the siloxane obtained using an appropriate agent; and (c) the separation and purification of the optically active alcohol formed. Polymethylhydrosiloxane (PMHS) is a preferred silane agent, zinc is a preferred metal, and the precursor compound is produced by reacting a salt or complex of the respective metal with the reducing agent. In another embodiment, an appropriate salt of the chosen metal is used directly in the reaction with the chiral ligand to produce the catalytic form after reaction with the ligand. The process enables high enantiomeric excesses (ee) to be obtained in chiral alcohols.
[EN] DIVINYL ETHER DERIVATIVES CAPABLE OF RELEASING ACTIVE ALDEHYDES AND KETONES AND METHODS OF USE FOR PERFUMING SURFACES<br/>[FR] DÉRIVÉS DE DIVINYL ÉTHER CAPABLES DE LIBÉRER DES ALDÉHYDES ACTIFS ET DES CÉTONES ET PROCÉDÉS D'UTILISATION POUR PARFUMER DES SURFACES
申请人:FIRMENICH & CIE
公开号:WO2010029462A1
公开(公告)日:2010-03-18
The present invention provides divinyl ether derivatives capable of releasing in a controlled manner at least one active aldehyde and/or ketone into the surrounding environment. The invention relates to the use of these divinyl ether derivatives as perfuming or flavoring ingredients, as well as to the perfuming compositions and consumer articles containing them.
[EN] PRO-PERFUME COMPOSITIONS<br/>[FR] COMPOSITIONS DE PROPARFUM
申请人:FIRMENICH & CIE
公开号:WO2021123144A1
公开(公告)日:2021-06-24
The present invention relates to a perfuming composition comprising at least two properfume compounds selected from the group consisting of a pro-perfume compound releasing a perfume compound upon exposure to light, a pro-perfume compound releasing a perfume compound upon exposure to air/oxygen, a pro-perfume compound releasing a perfume compound upon exposure to heat, a pro-perfume compound releasing a perfume compound upon exposure to moisture and a pro-perfume compound releasing a perfume compound upon exposure to enzymes. The present invention further concerns a perfumed consumer product comprising the inventive perfuming composition, as well as the use of the inventive perfuming composition for improving, enhancing, conferring and/or modifying the fragrance impression and/or fragrance intensity of a consumer product.