CAS: 620-23-5; 3-Tolualdehyde

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1,1-二乙酰氧基-1-(3-甲基苯基)-甲烷置于sulphated Zirconia体系中,用 乙腈 作为反应溶剂,化学反应 0.3H,以100%的收率获得产物3-甲基苯甲醛
参考文献:硫酸化氧化锆作为环保催化剂用于无溶剂条件下的酰基制备,微波辅助的酰基脱保护以及邻羟基苯甲醛脱水二聚体的合成.
标题:硫酸化氧化锆作为环保催化剂用于无溶剂条件下的酰基制备,微波辅助的酰基脱保护以及邻羟基苯甲醛脱水二聚体的合成.
摘要:与使用溶剂的传统方法相比,无溶剂方法可在更短的反应时间和更高的产率下区域选择性地合成酰基化合物(1,1-二乙酸酯).在邻羟基苯甲醛的保护反应中,观测到乙酰化合物和脱水二聚体的形成.脱保护反应涉及稀释的反应物在固体硫酸化氧化锆 (Sz) 催化剂存在下的微波 (Mw) 暴露,该催化剂可以轻松回收和重复使用.硫酸化氧化锆被回收多次而没有任何活性损失.
DOI:10.3390/molecules14104065

专利信息

专利号:US-5484949-A
优先权日:1993-01-29
标题:Method for the synthesis of α β-unsaturated ketones
发明人：TSUKASHIMA KEIICHI; NAKAJIMA MASASHI; FUJIMARU MASAYOSHI; SUZUKI KENJI
权利人:NIPPON SODA CO
摘要:The present invention relates to a method for the synthesis of alpha , beta -unsaturated ketones which comprises, in the method for the synthesis of alpha , beta -unsaturated ketones represented by general formula reacting aldehydes represented by general formula R1CHO (where R1 is as defined above) with alkali metal salt of acetoacetic acid represented by general formula sence as a catalyst of 3-azabicyclo[3,2,2]nonane, a cyclic secondary amine represented by general formula (1) (1) a cyclic secondary amine represented by general formula (2) (2) (where, l is 1 or more and up to 6, a ring with N is a 6-membered, 7-membered or 8-membered ring, the two neighbors of N are methylene, R3 is a lower alkyl group, its substitution position is at a carbon atom other than two those adjacent to N, and is an alicyclic group or a phenol group), or a secondary amine represented by general formula (3) CH3NHCH2R4(3) in a mixuture solvent of water and water-insoluble organic solvent, while keeping the pH constant with mineral acid, and by adjusting an amount of water.

专利号:US-6524446-B2
优先权日:2001-03-27
标 题 :Process for synthesis of a porphyrin compound using a molecular sieve catalyst under microwave irradiation
发明人：KULKARNI SHIVANAND JANARDAN; RAGHAVAN KONDAPURAM VIJAYA; MOTKURI RADHA KISHAN; NAGABANDI SRINIVAS
权利人:COUNCIL SCIENT IND RES
摘要:The present invention provides an improved process for synthesis of porphyrin compounds of the general formula 1 n from pyrrole and aromatic aldehyde over zeolite molecular sieve catalysts using microwave heating, (solvent free) to provide an eco-friendly, economical, faster and selective heterogeneous method.

专利号:US-9085550-B2
优先权日:2005-01-21
标题 :Ligands for estrogen related receptors and methods for synthesis of said ligands
发明人：FORMAN BARRY; YU DONNA
权利人:FORMAN BARRY; YU DONNA; HOPE CITY
摘要:Estrogen-Related Receptor (ERR) modulating compounds and methods for synthesis of said compounds are described.

专利号:US-9834570-B2
优先权日:2013-06-03
标 题 :One step process for regioselective synthesis of α-acyloxy carbonyls
发明人：SUDALAI ARUMUGAM; REDDI RAMBABU; MALEKAR PUSHPA
权利人:COUNCIL SCIENT IND RES
摘要:A regioselective N-Heterocyclic Carbene (NHC) catalyzed one step process for high yield synthesis of α-acyloxy carbonyl compounds is disclosed.

专利号:US-2022356139-A1
优先权日:2019-09-03
标 题:Synthesis of deuterated aldehydes
发明人：WANG WEI
权利人:ARIZONA BOARD OF REGENTS ON BEHALF OF ATHE UNIV OF ARIZONA
摘要:Described are methods for preparing a deuterated aldehyde using N-heterocyclic carbene catalysts in a solvent comprising D 2 O. The methods may be used to convert a wide variety of aldehydes (e.g., aryl, alkyl, or alkenyl aldehydes) to C-1 deuterated aldehydes under mild reaction conditions without functionality manipulation.

专利号:WO-2015109451-A1
优先权日:2014-01-22
标 题 :Synthesis of compounds containing 8-oxa-3-azabicyclo (3.2.1)octane ring
发明人：LI PENG; DECAMPO FLORYAN; SHI FENG; CUI XINJIANG; YUAN HANGKONG
权利人:RHODIA OPERATIONS; LANZHOU INSTITUTION OF CHEMICAL PHYSICS CHINESE ACADEMY OF SCIENCE
摘要:The present invention mainly pertains to catalytic processes for the direct amination of 2, -bis(hydroxymethyl) tetrahydrofuran to obtain compounds containing the 8-oxa-3-azabicyclo (3.2.1) octane ring, in the presence of: a homogenous catalyst which is a complex comprising at least one element selected from the group consisting of Iridium or Ruthenium and at least one donor ligand, or a heterogeneous catalyst comprising at least one Group 8-11 transition metal element and one poor metal element in the p-block of the period table.