CAS: 75-65-0; Tert-Butanol

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CAS号13058-24-7 叔丁氧基三甲基硅烷 | CAS号115-11-7 2-甲基丙烯 | CAS号75-28-5 异丁烷 | CAS号507-20-0 氯代叔丁烷 | CAS号124-38-9 二氧化碳 | CAS号106-98-9 正丁烯 | CAS号72950-99-3 ((tert-butoxyca... | CAS号630-19-3 三甲基乙醛 | CAS号762-75-4 甲酸叔丁酯 | CAS号594-19-4 叔丁基锂 | CAS号1221-65-4 1,6-Di-t-butyl-... | CAS号1081-32-9 6-tert-butylnap... | CAS号108168-88-3 N-(叔-丁基)-2-氰基乙酰胺 | CAS号111652-10-9 2-Methyl-2-prop... | CAS号106917-61-7 1-N-tert-butyl-... | CAS号109573-05-9 (2-吡啶-4-基-乙基)氨基甲酸叔丁酯 | CAS号111081-10-8 n-(1,3-二噁茚-4-基)... | CAS号1118-32-7 Propanamide,N-(... | CAS号10284-51-2 1-(1-butoxyethe...

专利信息

专利号:US-2014255263-A1
优先权日:2011-08-17
标题:Apparatus for the liquid-phase synthesis of isoprene from isobutylene and formaldehyde
发明人：DYKMAN ARKADII SAMUILOVICH; SIBAGATULLIN GAMIL GABDRAHMANOVICH; FEDORCOVA ELENA VLADIMIROVNA; FLEGONTOV ALEKSEI MICHAILOVICH
权利人:DYKMAN ARKADII SAMUILOVICH; SIBAGATULLIN GAMIL GABDRAHMANOVICH; FEDORCOVA ELENA VLADIMIROVNA; FLEGONTOV ALEKSEI MICHAILOVICH; OBSHESTVO S OGRANICHENNOI OTVETSTVENNOSTIU NP OB EUROCHIM
摘要:The apparatus for liquid-phase synthesis of isoprene from isobutylene and formaldehyde, comprising the following units of synthesis of isoprene precursors: 1,3-dioxanes synthesis unit; unit for TMC synthesis from isobutylene-containing fraction; unit for TMC synthesis from recycled concentrated isobutylene derived either from isoprene synthesis unit or from the unit for synthesis products separation and isoprene monomer isolation; isoprene synthesis unit; by-products decomposition unit; unit for synthesis products separation and isoprene monomer isolation. The apparatus is characterized with separation of by-product fractions from 1,3-dioxanes synthesis unit; with assignment of light fraction for sale or its supply for combined decomposition with the by-products (MDHP fraction), formed during separation of synthesis products and isolation of isoprene monomer; with assignment of heavy fraction for sale, at that TMC and 1,3-dioxanes that were formed in the corresponding units are simultaneously supplied for combined decomposition to isoprene synthesis unit while the unit for separation of synthesis products and isolation of isoprene monomer is directly connected with isoprene synthesis unit, by-products decomposition unit as well as with the unit for TMC synthesis from recycled concentrated isobutylene. The apparatus is also characterized by the following: 1,3-dioxanes synthesis unit includes by-products separation into light, medium and heavy fractions, from which the light fraction of by-products is fed for homogenous decomposition to isoprene synthesis unit and/or to by-products decomposition unit for combined decomposition with the by-products (MDHP fraction) formed during separation of synthesis products and isolation of isoprene monomer; the medium fraction of by-products is assigned for sale and/or mixed with the light fraction of by-products and supplied to by-products decomposition unit; and unreacted isobutylene from the unit of TMC synthesis from recycled concentrated isobutylene is supplied to the unit of TMC synthesis from isobutylene-containing fraction, being previously mixed.

专利号:WO-2009082260-A1
优先权日:2007-12-21
标 题 :Plant for the liquid phase synthesis of isoprene from isobutylene and formaldehyde
发明人：BUSYGIN VLADIMIR MIKHAILOVICH; DYKMAN ARKADIY SAMUILOVICH; GILMANOV KHAMIT KHAMISOVICH; POLYAKOV SERGEY ALEKSANDROVICH; FLEGONTOV ALEKSEY MICHAYLOVICH; FEDORCOVA ELENA VLADIMIROVNA
权利人:OBSHESTVO O OGRANICHENNOI OTVE
摘要:The invention relates to a plant for the synthesis of isoprene in a liquid phase from isobutylene and formaldehyde or from the source substances thereof. The inventive plant consists of a dimethyl dioxane synthesis unit detached from two parallel operating trimethyl carbinol synthesis units, and the trimethyl carbinol and dimethyl dioxane produced therein are simultaneously supplied for common decomposition to an isoprene synthesis unit. Light by-products extracted in a unit for rectifying high-boiling by-products, which unit is located downstream of the dimethyl dioxane synthesis unit, are supplied either to sales or to decomposition together with by-products (methyl-dihydropyrane fraction ) which are produced during end-products separation and isoprene monomer extraction, or to sales and to a decomposition unit for decomposition together with the above-mentioned by-products (methyl-dihydropirane fraction), afterwards to the end-product separation and isoprene monomer extraction unit. The end-product separation and isoprene monomer extraction unit is directly connected to the soprene synthesis unit, the decomposition unit and to the dimethyl dioxane synthesis unit. Said plant makes it possible to reduce the accumulation of high-boiling by-products, to decrese the production costs and to improve the engineering-and-economical performances of the process.

专利号:US-11912654-B2
优先权日:2021-09-03
标 题:Process for stereospecific synthesis of vitamin K2 and its novel intermediates
发明人：MEHTA DILIP; SHASHTRI MAYANK; RAJU BNS; SHAH ASHWIN; VORA PARIN; MAHALE UMAKANT
权利人:SYNERGIA LIFE SCIENCES PVT LTD
摘要:The present disclosure relates to a novel process for the synthesis of stereospecific compounds of Vitamin K2 group in general and Vitamin K2-7. The present disclosure further discloses novel intermediates useful in the synthesis of stereospecific Vitamin K2-7. Compounds of the Vitamin K2 group obtained are crystalline and exhibit well defined melting points.

专利号:WO-2023031841-A1
优先权日:2021-09-03
标题:A process for the stereospecific synthesis of vitamin k2 and its intermediates
发明人：MEHTA DILIP; SHASHTRI MAYANK; RAJU BNS; VORA PARIN; MAHALE UMAKANT
权利人:SYNERGIA LIFE SCIENCES PVT LTD
摘要:The present disclosure relates to a novel process for the synthesis of stereospecific compounds of Vitamin K2 group in general and Vitamin K2-7, in particular. It also discloses novel intermediates useful in the synthesis of stereospecific Vitamin K2-7. Compounds of the Vitamin K2 group obtained are crystalline and exhibit well defined melting points.

专利号:US-2024116890-A1
优先权日:2022-09-28
标 题 :Large scale synthesis of cannabinol
发明人：COLLINS ARIANNA C; CRUCES IVAN; RAY KYLE; CRUCES WESTLEY
权利人:COLORADO CHROMATOGRAPY LLC
摘要:Methods for producing cannabinol, cannabivarin, or derivatives thereof are disclosed. The methods disclosed herein can be employed for large scale synthesis or semi-synthesis of the compounds, including multi-kilogram quantities of the compounds.

专利号:US-9126995-B2
优先权日:2011-11-08
标题:Method for catalytic asymmetric synthesis of optically active isoxazoline compound and optically active isoxazoline compound
发明人：TOYAMA KEN-ICHI; MORIYAMA YUJI; MATOBA KAZUTAKA; YAOSAKA MANABU; IKEDA EITATSU
权利人:NISSAN CHEMICAL IND LTD
摘要:There is provided a method for catalytic asymmetric synthesis of optically active isoxazoline compound and an optically active isoxazoline compound. A method for catalytic asymmetric synthesis of optically active isoxazoline compound of a formula (6) including reacting an α,β-unsaturated carbonyl compound of a formula (1) and a hydroxylamine in a solvent in the presence of a base by adding a chiral phase transfer catalyst. An optically active isoxazoline compound of a formula (13) that can be synthesized by the method.