CAS: 708-76-9; 2-Hydroxy-4,6-Dimethoxybenzaldehyde

上下游产品

diazomethane 2,4,6-trihydroxybenzaldehyde 2,4-dihydroxy-6-methoxybenzaldehyde 3,5-dimethoxyphenol 3-hydroxy-5,7-dimethoxy-2-(4-methoxy-phenyl)-chromenylium; chloride 3,5,7-trimethoxy-2',4'-dihydroxyflavylium chloride 2-(3,4-dimethoxy-phenyl)-3-hydroxy-5,7-dimethoxy-chromenylium; chloride 3-hydroxy-5,7-dimethoxy-2-(3,4,5-trimethoxy-phenyl)-chromenylium; chloride

间苯三酚置于乙醚,三氯氧磷体系中,化学反应生成 4,6-二甲氧基水杨醛
参考文献:Pratt; Robinson,Journal Of The Chemical Society,1924,Vol. 125,P. 195
标题:Pratt; Robinson,Journal Of The Chemical Society,1924,Vol. 125,P. 195

专利信息

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-11179709-B2
优先权日:2016-12-28
标 题:Catalyst composition for a production process of δ-lactone from carbon dioxide and 1,3-butadiene
发明人：CHOTCHATCHAWANKUL SUCHEEWIN; WONGMAHASIRIKUN PHONPIMON; KAEOTHIP SOPHON; PHOMPHRAI KHAMPHEE
权利人:PTT GLOBAL CHEMICAL PUBLIC CO LTD
摘要:This present invention relates to a catalyst composition for a production process of δ-lactone from carbon dioxide and 1,3-butadiene that can efficiently catalyze the synthesis reaction of δ-lactone with good selectivity of δ-lactone, wherein said catalyst composition comprising: a) palladium metal complexes as shown in structure (I) [Formula should be inserted here] wherein, R1, R2, R3 and R4 independently represents a group selected from a hydrogen atom, a halogen atom, an alkyl group, an alkoxy group, an amine group, or optionally an alkenyl group, an alkynyl group, a phenyl group, a benzyl group, or a cyclic hydrocarbon group comprising a hetero atom; and b) phosphorus compound selected from a phosphine group having a general formula [Formula should be inserted here], wherein R5 is selected from an alkyl group, a cycloalkyl group, or an aryl group.

专利号:US-6803471-B2
优先权日:2000-05-31
标 题 :Indolinospiropyran compounds and methods for their manufacture
发明人：CARREIRA ERICK M; ZHAO WEILI
权利人:JOHNSON & JOHNSON VISION CARE
摘要:The present invention provides indolinospiropyran compounds and methods for their manufacture, which compounds are useful as photochromic compounds. The compounds of the invention are substituted on the indole ring with succinimide, which substitution permits ring opening of the succinimide and modulation of the bulk and photochromic properties of the compounds. The compounds may be conveniently prepared using the solid phase organic synthesis of the invention.

专利号:US-5734067-A
优先权日:1994-09-28
标题 :Anti-oxidative tricyclic, condensed heterocyclic compound
发明人：JINNO SHUJI; KOGURE YASUYO; ONUKI HIROYUKI; OKITA TAKAAKI
权利人:NIPPON SUISAN KAISHA LTD
摘要:Providing a novel tricyclic, condensed heterocyclic compound having an anti-oxidative action and being promising for use in pharmaceutical agents, cosmetics, chemical products and the like. By chemical synthesis, a novel anti-oxidative, tricyclic, condensed heterocyclic compound represented by the following formula: ##STR1## (wherein X--Y represents CH 2 --Câ•?O, CH 2 --CH 2 or CHâ•?CH; Z represents O, S, or Sâ•?O; R 1 to R 8 represent independently those selected from the group consisting of hydrogen atom, a hydroxyl group, a halogen group, a lower alkyl group, a lower alkoxyl group, a lower alkyl ketone group and CF 3 ; and at least two of R 1 to R 4 are hydroxyl groups); and the salts thereof are provided. The compound has an anti-oxidative activity at the same degree as or higher than the activity of α-tocopherol, so the compound is promising as a therapeutic drug for a variety of diseases, such as cancer, arteriosclerosis, or liver diseases, in which it is believed that biological lipid peroxides may b involved.