CAS: 492-88-6; 3-Ethoxysalicylaldehyde

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CAS号75792-34-6 3-乙氧基-2-甲氧基苯甲醛 | CAS号94-71-3 邻乙氧基苯酚 | CAS号50-00-0 甲醛 | CAS号15950-66-0 2,3,4-三氯苯酚 | CAS号609-19-8 3,4,5-三氯苯酚 | CAS号548756-57-6 tert-butyl 3-(3... | CAS号1666-65-5 2-ethoxy-6-(pro... | CAS号67-66-3 氯仿 | CAS号98-95-3 硝基苯 | CAS号488-17-5 3-甲基邻苯二酚 | CAS号150655-06-4 3-乙氧基-2-羟基-5-硝基苯甲醛 | CAS号20035-44-3 3-乙氧基-5-溴-2-羟基-苯甲醛 | CAS号2213-66-3 5-(叔丁基)-3-甲基苯-1,2-二醇 | CAS号2213-67-4 1,2-Benzenediol... | CAS号24454-82-8 2,3-二乙氧基苯甲醛 | CAS号2563-08-8 1,2-Benzenediol... | CAS号7797-83-3 1,3-苯并二氧-4-甲醛 | CAS号86-51-1 2,3-二甲氧基苯甲醛 | CAS号72744-54-8 5-溴-1,3-苯并二氧杂环戊...

O-(烯丙氧基)苯乙醚 反应生成 3-乙氧基水杨醛
参考文献:Us2457074
标题:Us2457074

专利信息

专利号:US-2024240209-A1
优先权日:2021-04-20
标 题:Synthesis of enantiopure cis-a-irone from a renewable carbon source
发明人：CHEN XIXIAN; ZHANG CONGQIANG; T REHKA; SHUKAL SUDHA; SMITH DEREK; ANDRÉ ISABELLE; JEREMY ESQUE
权利人:AGENCY SCIENCE TECH & RES; INSTITUT NATIONAL DE RECH POUR L AGRICULTURE LALIMENTATION ET LENVIRONMENT; CENTRE NAT RECH SCIENT; INSTITUT NAT DES SCIENCES APPLIQUEES DE TOULOUSE
摘要:Synthesis of enantiopure cis-α-irone from a renewable carbon source Disclosed herein are natural and synthetic enzymes capable of performing a method of producing cis-α-irone. The method comprises providing an enzyme capable of converting psi-ionone to cis-α-irone; and contacting the enzyme and psi-ionone under suitable conditions to produce cis-α-irone. The enzyme may be a methyltransferase from Streptomyces albireticuli (SaMT), a promiscuous bifunctional methyltransferase/cyclase (pMT1) enzyme from Streptomyces, or a modified pMT1 enzyme with at least one substitution. The enzymes allow the in-vivo and in-vitro production of cis-α-irone including the use of glucose as feedstock for the biotransformation into cis-α-irone.

专利号:US-3972945-A
优先权日:1974-12-23
标 题:Process for the selective synthesis of salicylaldehydes
发明人：ALBRIGHT CHARLES F
权利人:GARRETT CORP
摘要:The classical Reimer-Tiemann reaction for the synthesis of phenolic aldehydes has been modified from an aqueous to a non-aqueous system to provide an improved route for the formation of salicylaldehydes and, preferably, 3-substituted salicylaldehydes, e.g. 3-fluorosalicylaldehyde. Heretofore, compounds such as 3-substituted salicylaldehydes have proven to be extremely difficult to prepare in other than small laboratory quantities from the corresponding ortho-substituted phenol, since, in the final salicylaldehyde, each position ortho to the hydroxyl group contains substitution. In particular, with respect to 3-fluorosalicylaldehyde, one of the positions is occupied by the strongly electronegative fluorine atom so that the principal reaction product in the aqueous Reimer-Tiemann reaction has always been the para-isomer (3-fluoro-4-hydroxy-benzaldehyde), only negligible quantities of the desired ortho-isomer being obtained. In the process of the present invention, o-fluorophenol is caused to react with sodium hydroxide and chloroform in a hydrocarbon diluent (preferably benzene), maintaining the reaction under essentially anhydrous conditions by taking up the water of reaction with excess sodium hydroxide. It is necessary that an aprotic solvent, such as N,N-dimethylformamide, be employed as a catalyst. The use of boron oxide, while not absolutely necessary to the reaction, has been found to be advantageous in that the reaction proceeds more smoothly if the phenoxyboroxine is formed initially. The boron oxide also acts as a dehydrating agent and aids in removing the water of reaction. The preferential reaction product is the desired 3-fluorosalicylaldehyde, no paraisomer having been found. After hydrolysis and neutralization, the 3-fluorosalicylaldehyde can be recovered by azeotropic distillation along with a substantial quantity of unreacted o-fluorophenol which can be purified for recycle in subsequent preparations.

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-4197408-A
优先权日:1975-08-01
标 题 :Asymmetric synthesis of alkyl chrysanthemate
发明人：ARATANI TADATOSHI; FUJITA FUMIO; NAGASE TSUNEYUKI; YONEYOSHI YUKIO
权利人:SUMITOMO CHEMICAL CO
摘要:A process for the production of an optically active chrysanthemate which comprises reacting 2,5-dimethyl-2,4-hexadiene with a diazoacetate of the formula: n n N.sub.2 CHCOOR n n wherein R is selected from the group consisting of (a) cycloalkyl group with or without substituent(s) whose total carbon atom number is 5-20, (b) tertiary aralkyl group whose carbon atom number is 9 to 20, and (c) tertiary alkyl group with or without alkoxy substituent(s) whose total carbon atom number is 4-20, in the presence of a copper complex coordinated with a chiral Schiff base of the formula: ##STR1## wherein C* is an asymmetric carbon atom, R 1 is selected from the group consisting of (a) alkyl groups whose carbon atom number is 1-10 and (b) aralkyl groups with or without alkoxy substituent(s), whose total carbon atom number is 7-20, R 2 is selected from aryl groups with alkoxy substituent(s), whose total carbon atom number is 7-30, and each of X 1 and X 2 is selected from the group consisting of (a) hydrogen atom, (b) alkyl groups having 1-10 carbon atoms, (c) phenyl group, (d) alkoxy groups having 1-10 carbon atoms, (e) halogen atoms and (f) nitro group, or (g) X 1 and X 2 together form a benzo group.

专利号:US-4603218-A
优先权日:1983-06-03
标题 :Asymmetric synthesis of cyclopropanecarboxylate derivatives using chiral copper complex as catalyst
发明人：ARATANI TADATOSHI; YOSHIHARA HIROSHI; SUSUKAMO GOHFU
权利人:SUMITOMO CHEMICAL CO
摘要:A chiral copper complex which is produced by the reaction of a chiral copper complex of the formula: ##STR1## wherein R 1 is (a) alkyl group, or (b) aralkyl group; R 2 is (a) 2-alkoxyphenyl group, or (b) 2-alkoxy-5-alkylphenyl group; either one of X 1 and X 2 is (a) hydrogen atom, (b) halogen atom, (c) alkyl group, (d) alkoxy group, or (e) nitro group, or adjacent X 1 and X 2 together form a benzo group, with a mono-substituted hydrazine of the formula: n n R.sub.3 NHNH.sub.2 n n wherein R 3 is (a) aryl group, (b) aralkyl group, or (c) alkyl group. n The copper complex is used as a catalyst in the production of an optically active alkyl cyclopropanecarboxylate.

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.