CAS: 1194-98-5; 2,5-Dihydroxybenzaldehyde

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CAS号1761-61-1 5-溴水杨醛 | CAS号93-02-7 2,5-二甲氧基苯甲醛 | CAS号23001-29-8 1',3',3'-三甲基-6-羟基螺环 | CAS号2033-24-1 丙二酸环(亚)异丙酯 | CAS号56437-16-2 6-羟基-2-氧代-2H-色烯-3-羧酸 | CAS号67-66-3 氯仿 | CAS号123-31-9 对苯二酚 | CAS号672-13-9 2-羟基-5-甲氧基苯甲醛 | CAS号1079921-54-2 phenyl 4,6-O-(2... | CAS号1084-96-4 Benzoic acid,2,... | CAS号490-79-9 2,5-二羟基苯甲酸 | CAS号35431-26-6 5-羟基-2-甲氧基苯甲醛 | CAS号26122-90-7 2-amino-3-(2,5-... | CAS号26172-03-2 3,6-diox°Cycloh... | CAS号241127-58-2 Adaphostin | CAS号95-71-6 鹿蹄草素 | CAS号241127-72-0 2-溴-3,6-二羟基苯甲醛 | CAS号672-13-9 2-羟基-5-甲氧基苯甲醛 | CAS号93-02-7 2,5-二甲氧基苯甲醛

5-溴水杨醛置于copper(I) Oxide,2-吡啶甲醛肟,Cesium Hydroxide,四丁基溴化铵体系中,用 水 用作溶剂,化学反应 48.0H,以62%的收率获得2,5-二羟基苯甲醛
参考文献:一种简单实用的铜催化方法,以水用作溶剂,从芳基卤化物取代苯酚
标题:一种简单实用的铜催化方法,以水用作溶剂,从芳基卤化物取代苯酚
摘要:水惊喜!通过使用环境友好的水作用作溶剂,开发了一种简单而实用的铜催化的芳基卤化物羟基化取代酚的方法(参见方案).该方法在温和的条件下进行,并且可以耐受底物中的各种官能团.
Doi:10.1002/chem.200903468

专利信息

专利号:US-2009099061-A1
优先权日:2006-01-27
标 题:Synthesis of carotenoid analogs or derivatives with improved antioxidant characteristics
发明人：FOSS BENTE J; NADOLSKI GEOFFRY T; LOCKWOOD SAMUEL F
权利人:FOSS BENTE J; NADOLSKI GEOFFRY T; LOCKWOOD SAMUEL F
摘要:A method is described for synthesizing and administering carotenoid compounds with improved antioxidant characteristics. In some embodiments, extension or improvement of conjugation may be employed in structural modification of carotenoids. In other embodiments, reduction of ring/chain steric hindrance may improve the lambda max, and hence, the overall antioxidant capability, of particular compounds. In other embodiments, introduction and/or increase in synthetic handles for conjugation may improve the stoichiometric ratios of conjugating moieties to the polyene backbone. The methods may be used to improve natural and/or synthetic compounds for medicinal application in the treatment of disease.

专利号:US-5175302-A
优先权日:1987-07-13
标 题 :Nucleophilic fluoroalkylation of aldehydes
发明人：STAHLY G PATRICK
权利人:ETHYL CORP
摘要:Aryl difluoromethyl sulfone adds to aldehydes under phase transfer conditions to give novel substituted alcohols of the general formula n n RCH(OH)CF.sub.2 SO.sub.2 Ar (I) n n wherein R is an aryl, cycloaliphatic, sec- or tert-aliphatic, or heterocyclic group and Ar is an aryl group. The substituted alcohols of formula I are of particular utility as intermediates in the synthesis of a variety of useful end products. For example, the products of formula I may be utilized in desulfonylation reactions, oxidation reactions and fluorination reactions.

专利号:US-4837327-A
优先权日:1987-07-13
标 题 :Process for nucleophilic fluoroalkylation of aldehydes
发明人：STAHLY G PATRICK
权利人:ETHYL CORP
摘要:Aryl difluoromethyl sulfone adds to alkehydes under phase transfer conditions to give novel substituted alcohols of the general formula n n RCH(OH)CF.sub.2 SO.sub.2 Ar (I) n n wherein R is an aryl, cycloaliphatic, sec- or tert-aliphatic, or heterocyclic group and Ar is an aryl group. The substituted alcohols of formula I are of particular utility as intermediates in the synthesis of a variety of useful end products. For example, the products of formula I may be utilized in desulfonylation reactions, oxidation reactions and fluorination reactions.

专利号:US-4999429-A
优先权日:1989-01-09
标 题 :Process for the preparation of α,α,β-1-trifluoro-1-olefinic derivatives
发明人：STAHLY G PATRICK
权利人:ETHYL CORP
摘要:Aryl difluoromethyl sulfone adds to aldehydes under phase transfer conditions to give novel substituted alcohols of the general formula n n RCH(OH)CF.sub.2 SO.sub.2 Ar (I) n n wherein R is an aryl, cycloaliphatic, sec- or tert-aliphatic, or heterocyclic group and Ar is an aryl group. The substituted alcohols of formula I are of particular utility as intermediates in the synthesis of a variety of useful end products. For example, the products of formula I may be utilized in desulfonylation reactions, oxidation reactions and fluorination reactions.

专利号:US-9765044-B2
优先权日:2013-03-15
标 题 :Synthesis of novel ionic liquids from lignin-derived compounds
发明人：SOCHA AARON; SINGH SEEMA; SIMMONS BLAKE A; BERGERON MAXIME
权利人:UNIV CALIFORNIA; SANDIA CORP
摘要:Methods and compositions are provided for synthesizing ionic liquids from lignin derived compounds comprising: contacting a starting material comprising lignin with a depolymerization agent to depolymerize the lignin and form a mixture of aldehyde containing compounds; contacting the mixture of aldehyde containing compounds with an amine under conditions suitable to convert the mixture of aldehyde containing compounds to a mixture of amine containing compounds; and contacting the mixture of amine containing compounds with an acid under conditions suitable to form an ammonium salt, thereby preparing the ionic liquid.

专利号:US-7056348-B2
优先权日:2001-04-19
标题:5-aryl-1,3,3-trimethyl-2-methylene-indoline derivatives and salts thereof, methods for the production and use of said compounds for the temporary coloration of fibers
发明人：SAUTER GUIDO; BRAUN HANS-JUERGEN; REICHLIN NADIA
权利人:WELLA AG
摘要:A method for the synthesis of 5-aryl-1,3,3,-trimethyl-2-methylene-indoline derivatives of Formula (I) or its salts of Formula (Ia) wherein 1 mole of a 5-aryl-2,3,3-trimethyl-3H-indole derivative of Formula (VII) is reacted for 1 to 44 hours at a temperature of 20° to 180° C. in an apolar, aprotic or polar, protic or polar aprotic solvent with 1 to 50 moles of a compound of Formula R1-A; new compounds of Formulas (I)/(Ia) and (V), obtainable by this method as well as an agent containing at least one compound of Formula (I)/(Ia) and a carbonyl/imine compound for dyeing keratinic fibers and a method for temporarily dyeing keratin fibers, for which the keratin fiber is dyed with the aforementioned agent and the dyeing, so obtained, is removed again at any later time by a sulfite preparation.