COMBINED SYNTHESIS OF A NITRILE-ESTER/ACID AND OF A DIESTER/DIACID
申请人:ARKEMA FRANCE
公开号:US20160016894A1
公开(公告)日:2016-01-21
A method for the combined synthesis of a mono-unsaturated nitrile-ester(acid) and of a bi-functional carbonyl compound, wherein it includes a step including the cross metathesis mc1 of an unsaturated fatty acid/ester compound with an unsaturated nitrile compound, in which mc1 is performed with partial conversion such as to obtain and recover, separately, at least the following products: a mono-unsaturated nitrile-ester/acid and a symmetrical compound, diester or diacid respectively including a double bond located in the middle of the molecular chain of compound, and subsequently a step including the oxidation cleavage cp2 of the double bond of compound, such as to form a single type of carbonyl compound having formula R2-(CH2)n-COR′, in which R′ is H or OH, depending on the operating conditions selected for the oxidation cleavage cp2. Also, the production of monomers for the polymer industry.
A process for the synthesis of an unsaturated product by cross metathesis between a first unsaturated compound having at least 8 carbon atoms and a second unsaturated compound having less than 8 carbon atoms, the first unsaturated compound being capable of producing an unsaturated coproduct comprising more than 14 carbon atoms, by homometathesis, said process including at least one production phase which includes: feeding a reactor with the first unsaturated compound; feeding the reactor with the second unsaturated compound; feeding the reactor with at least a first metathesis catalysts, then feeding the reactor with at least a second metathesis catalyst; withdrawing a product stream arising from the reactor; the turnover number of the first catalyst being higher than the turnover number of the second catalyst so as to achieve the same target degree of conversion of the first unsaturated compound.
Fermentation process for preparing 10-hydroxy-C18-carboxylic acid and gamma-dodecalactone derivatives
申请人:INTERNATIONAL FLAVORS & FRAGRANCES INC.
公开号:EP0578388A2
公开(公告)日:1994-01-12
Described is a fermentation process for preparing 10-hydroxy-C18-carboxylic acid derivative containing compositions containing compounds defined according to the structure :
and gamma-dodecalactone derivative-containing compositions containing compounds defined according to the structure :
wherein the dashed lines represent the same or different carbon-carbon bonds; with each of the dashed lines representing a carbon-carbon single bond or a carbon-carbon double bond, products produced thereby and organoleptic uses thereof including uses for augmenting, enhancing or imparting aromas or flavors to or in consumable materials including but not limited to perfume compositions, colognes, perfumed articles, foodstuffs, chewing gums, beverages, toothpastes, hair preparations, tobacco compositions and smoking tobacco articles.