CAS: 609-15-4; Ethyl 2-Chloroacetoacetate

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6134-66-3 4755-81-1 34034-87-2

上下游产品

CAS号141-97-9 乙酰乙酸乙酯 | CAS号141-78-6 乙酸乙酯 | CAS号105-39-5 氯乙酸乙酯 | CAS号20412-62-8 乙基乙酰乙酸钠 | CAS号674-82-8 双乙烯酮 | CAS号64-17-5 乙醇 | CAS号112160-74-4 acetic acid-(2,... | CAS号5819-34-1 2-chloro-3-oxob... | CAS号60930-76-9 2-氯-3-氧代丁腈 | CAS号115538-75-5 (E)-ethyl 2-chl... | CAS号330858-13-4 6-氯-2-甲基咪唑并[1,2... | CAS号53715-64-3 4-甲基-2-苯基-1,3-噻... | CAS号33763-20-1 4-甲基-2-苯基-1,3-噻... | CAS号317319-35-0 2-[2-氟-4-(三氟甲基)... | CAS号39091-00-4 4-甲基-2-(3-吡啶)-1... | CAS号3885-38-9 2-Methyl-3-etho... | CAS号14714-18-2 6-氯-2-甲基-咪唑并[2,... | CAS号14476-67-6 5-氨基-4-氰基-2-甲基呋... | CAS号91248-60-1 2-氨基-5-甲基-3,4-呋... | CAS号51605-32-4 4-甲基-5-咪唑甲酸乙酯

Alkaline Earth Salt Of/the/ Methylsulfuric Acid置于氯仿,氯体系中,化学反应生成 2-氯乙酰乙酸乙酯
参考文献:Schoenbrodt,Justus Liebigs Annalen Der Chemie,1889,Vol. 253,P. 188,191,193
标题:Schoenbrodt,Justus Liebigs Annalen Der Chemie,1889,Vol. 253,P. 188,191,193

专利信息

专利号:US-12281348-B2
优先权日:2020-11-08
标 题:Method for the continuous flow synthesis of (R)-4-halo-3-hydroxy-butyrate
发明人：CHEN FENER; CHENG DANG; HUANG ZEDU; LIU MINJIE; HUANG HUASHAN; JIANG MEIFEN; WANG LULU
权利人:UNIV FUDAN
摘要:This application relates to organic synthesis, and more particularly to a method for the continuous flow synthesis of (R)-4-halo-3-hydroxy-butyrate using a micro-reaction system. This application performs an enzymatic asymmetric reduction of a substrate solution containing halogenated acetoacetate and a biocatalyst solution in the micro-reaction system composed of a micro-mixer, a micro-channel reactor, and a pH regulator to obtain the (R)-4-halo-3-hydroxy-butyrate. Compared to the prior art, the reaction time of the method is only a few minutes, the yield of the product (R)-4-halo-3-hydroxy-butyrate is greater than 95%, the reaction process is continuous, the degree of automation is high, the efficiency is high, and the process is simple to operate and easy to be used in industrialized production.

专利号:US-6096898-A
优先权日:1999-10-22
标 题:One pot synthesis of 1,2,4-triazoles
发明人：PODHOREZ DAVID E; HULL JR JOHN W; BRADY CHRISTINE H
权利人:DOW AGROSCIENCES LLC
摘要:One pot synthesis of 1,2,4-triazoles uses thioimidate intermediate and 1,2-dichloroethane solvent.

专利号:US-2025034146-A1
优先权日:2023-07-13
标题:Electro-photochemical synthesis of 1,2,4-triazolo-[4,3-a]pyrazine
发明人：PIERCEY DAVIN GLENN; YOUNT JOSEPH ROBERT
权利人:PURDUE RESEARCH FOUNDATION
摘要:A method of preparing a 1,2,4-triazolo-[4,3-a]pyrazine backbone using an electro-photochemical process comprising coupling a compound comprising a 5-substituted tetrazole moiety to a compound comprising an optionally substituted pyrazine moiety electrochemically and subjecting the resulting compound to photochemical excitation with ultraviolet light.

专利号:US-7153960-B2
优先权日:2001-12-10
标 题:Synthesis of 4,5-dihydro-pyrazolo[3,4-c]pyrid-2-ones
发明人：ZHOU JIACHENG; OH LYNETTE M; MA PHILIP; LI HUI-YIN; CONFALONE PASQUALE
权利人:BRISTOL MYERS SQUIBB CO
摘要:A novel process and intermediates thereof for making 4,5-dihydro-pyrazolo[3,4-c]pyrid-2-ones of the type shown below from appropriate phenyl hydrazines is described. n nThese compounds are useful as factor Xa inhibitors.

专利号:US-6441219-B1
优先权日:1999-07-15
标 题 :Process for the preparation of 5-and/or 6-substituted-2-hydroxybenzoic acid esters
发明人：DOEHNER JR ROBERT FRANCIS
权利人:BASF CORP
摘要:There is provided a single-step process for the preparation of a compound of formula I. n Compounds of formula I are useful as starting materials in the synthesis of natural products and in the manufacture of benzophenone fungicidal agents.

专利号:US-6559336-B2
优先权日:1999-07-15
标 题:Process for the preparation of 5- and/or 6-substituted-2-hydroxybenzoic acid esters
发明人：PFRENGLE ANDREAS; SCHEFFER ROBERT J H; SCHEIBLICH STEFAN; WEVERS JAN HENDRIK; VOGELBACHER UWE JOSEF; DOEHNER ROBERT F
权利人:BASF AG
摘要:There is provided a single-step process for the preparation of a compound of formula I.Compounds of formula I are useful as starting materials in the synthesis of natural products and in the manufacture of benzophenone fungicidal agents.