CAS: 108-68-9; 3,5-Xylenol

上下游产品

CAS号556-96-7 5-溴间二甲苯 | CAS号22445-41-6 3,5-二甲基-1-碘苯 | CAS号1123-09-7 3,5-二甲基-2-环己烯-1-酮 | CAS号172975-69-8 3,5-二甲基苯硼酸 | CAS号88-04-0 4-氯-3,5-二甲基苯酚 | CAS号103576-51-8 2-Methyl-2-hept... | CAS号325142-93-6 2-(3,5-二甲基苯基)-4... | CAS号119900-43-5 1-(methoxymetho... | CAS号874-63-5 3,5-二甲基苯甲醚 | CAS号112122-58-4 2-(3,5-dimethyl... | CAS号105970-33-0 [4-(hydroxymeth... | CAS号527-54-8 3,4,5-三甲基苯酚 | CAS号697-82-5 2,3,5-三甲基苯酚 | CAS号527-61-7 2,6-二甲基对苯醌 | CAS号2913-40-8 4-hydroxy-3,5-d... | CAS号5345-09-5 3,5-dimethyl-2-... | CAS号5344-97-8 3,5-二甲基-4-硝基苯酚 | CAS号115822-09-8 3,5-dimethyl-4-... | CAS号4370-49-4 3,5-dimethylcyc...

3,5-二甲基苯甲酸置于lithium Hydroxide体系中,用 四氢呋喃,甲醇,水,乙腈 用作溶剂,化学反应 16.0H,反应生成3,5-二甲基苯酚
参考文献:苯甲酸的脱羧羟基化
标题:苯甲酸的脱羧羟基化
摘要:在此,报道了第一个由苯甲酸合成苯酚的脱羧羟基化反应.该方法克服了与传统苯甲酸脱羧相关的挑战,甚至可以应用于后期功能化.
Doi:10.1002/anie.202108971

专利信息

专利号:WO-2024133119-A1
优先权日:2022-12-19
标 题:Process for the synthesis of isophorone in the liquid phase, including recycling of the by-products
发明人：RUPPIN CHRISTOPHE
权利人:ARKEMA FRANCE
摘要:The present invention relates to a continuous process for the synthesis of isophorone in the liquid phase by alkaline self-condensation of acetone, comprising the following successive steps: a) continuously injecting, through a tubular reactor (R), a stream of an aqueous alkali hydroxide solution and a stream of an organic solution comprising acetone and by-products recycled in step g), followed by b) condensation reaction of the acetone in the tubular reactor (R), then c) distillation of the reaction mixture from the tubular reactor (R), then d) separation of the concentrated raw reaction product from the distillation of step c), resulting in an alkaline aqueous phase and an organic phase containing isophorone, then e) distillation of the organic phase containing the isophorone recovered in the preceding step, then f) distillation of the polycondensation sub-products from the bottom of the column (D2) from the preceding distillation, then g) recycling, to the tubular reactor (R), of the stream from the column head of the preceding distillation (D3), said stream comprising xylitones and/or isoxylitones.

专利号:US-9809522-B2
优先权日:2015-09-11
标 题 :Selective liquefaction of lignin and biomass in a mixture of sub- and supercritical fluids in absence or presence of heterogeneous catalysts
发明人：SMIRNOVA ALEVTINA; LYNDE CHRIS; Numan-Al-Mobin Abu Md; RAJAPPAGOWDA RUDRESH BOMMADIHALLI
权利人:SOUTH DAKOTA BOARD OF REGENTS
摘要:Disclosed herein are methods for selective synthesis of specific phenolic products by means biomass or biomass products liquefaction, manipulation of the said selectivity in favor of one specific phenolic compound or a mixture of specific phenolic compounds, and the synthesis of the phenolic compounds from a liquid or biomass organic fraction produced in presence of a homogeneous catalyst in supercritical state or a mixture of said homogeneous and one or several heterogeneous catalysts mixed with water in sub-critical, near-critical, or supercritical condition.

专利号:US-7098354-B2
优先权日:2002-10-25
标 题:Racemoselective synthesis of rac-diorganosilylbis(2-methylbenzo[e]indeyl)zirconium compounds
发明人：DAMRAU HANS-ROBERT; MUELLER PATRIK; GARCIA VALERIE; SIDOT CHRISTIAN; TELLIER CHRISTIAN; LELONG JEAN-FRANCOIS
权利人:BASELL POLYOLEFINE GMBH
摘要:The present invention relates to a specific process for the diastereoselective synthesis of rac-diorganosilylbis(2-methylbenzo[e]indenyl)zirconium compounds of the formula I, n nby reacting the silyl-bridged bisindenyl ligand with a dihalozirconium bis(3,5-di-tert-butylphenoxide)-base adduct to form the diorganosilylbis(2-methylbenzo[e]indenyl)zirconium bis(3,5-di-tert-butylphenoxide) and subsequently replacing the phenoxide groups by X using suitable replacement reagents to give the compound of the formula I; where the substituents X can be identical or different and are each F, Cl, Br, I or linear, cyclic or branched C 1-10 -alkyl; and the substituents R can be identical or different and are each linear, cyclic or branched C 1-10 -alkyl or C 6-10 -aryl; and also to the use of these compounds as catalysts.

专利号:US-10239812-B2
优先权日:2017-04-27
标 题 :Systems and methods for synthesis of phenolics and ketones
发明人：FEDIE RONALD LEIGH; YAN BINGWEN; MCNEFF LARRY C; GREUEL PETER G; MCNEFF CLAYTON V
权利人:SARTEC CORP
摘要:Embodiments herein relate to apparatus and systems for phenolic and ketone synthesis and methods regarding the same. In an embodiment, a method of producing phenolics and ketones is included. The method can specifically include forming a reaction mixture comprising nanocrystalline cellulose (NCC) and water. The method can also include contacting the reaction mixture with a metal oxide catalyst at a temperature of 350 degrees Celsius or higher and a pressure of at least about 3200 psi to form a reaction product mixture. The reaction product mixture can include at least about 20 wt. % phenolics and at least about 10 wt. % ketones as a percentage of the total mass of nanocrystalline cellulose (NCC). Other embodiments are also included herein.

专利号:US-9815809-B2
优先权日:2013-07-05
标题:Formation of chiral 4-chromanones using chiral pyrrolidines in the presence of phenols or thiophenols
发明人：LETINOIS ULLA; NETSCHER THOMAS
权利人:DSM IP ASSETS BV
摘要:The present invention relates to a synthesis of chromanones or chromanes in a stereospecific matter in view of the 2-position in the chromanone or chromane ring. It has been found that this synthesis is particularly possible in the presence of a chiral compound of formula of a specific type and of at least one phenol or thiophenol.

专利号:WO-2025132814-A1
优先权日:2023-12-21
标 题:Novel synthesis of methyl-2-fluoroacrylate
发明人：BRUNKE JESSICA; FISCHER MICHAEL; WÖSSNER JAN STEPHAN
权利人:VIFOR INT AG
摘要:The present invention relates to novel synthesis methods of methyl 2-fluoroacrylate (MFA) which is a key precursor for the production of Veltassa® (Patiromer). The methods according to the invention are conducted by reacting an α-substituted β-hydroxy propionic acid derivative (I) via one or more intermediate steps involving one or more α-, β-substituted propionic acid derivatives (II) to obtain MFA (III).