CAS: 56-23-5; Tetrachloromethane

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CAS号75-09-2 二氯甲烷 | CAS号34557-54-5 methane | CAS号74-87-3 氯甲烷 | CAS号108-38-3 间二甲苯 | CAS号108-88-3 甲苯 | CAS号67-66-3 氯仿 | CAS号76-02-8 三氯乙酰氯 | CAS号75-44-5 光气 | CAS号2268-46-4 1,1,1,3-四氯四氟丙烷 | CAS号3170-80-7 trichloromethyl... | CAS号74-89-5 氨基甲烷 | CAS号7664-41-7 氨 | CAS号10140-89-3 二氯丙醛 | CAS号107-56-2 二硫代磷酸-O,O-二(1-甲基乙基)酯 | CAS号112086-86-9 N-(dichlorometh... | CAS号821-06-7 反式-1,4-二溴-2-丁烯 | CAS号10463-48-6 3,4-Dibromo-1-butene | CAS号10071-60-0 1-chloropent-2-ene | CAS号600-11-3 2,3-二氯戊烷 | CAS号105338-19-0 2-cyclohex-2-en...

📜三氯乙酰氯 以 Neat (No Solvent) 作为反应溶剂,化学反应生成 四氯化碳
参考文献:Anonymous,Beilsteins Handbuch Der Organischen Chemie,4. Auflage. J. Springer,Berlin 1918,Bd. 1,S. 65
标题:Anonymous,Beilsteins Handbuch Der Organischen Chemie,4. Auflage. J. Springer,Berlin 1918,Bd. 1,S. 65

专利信息

专利号:WO-2021108999-A1
优先权日:2019-12-03
标 题 :Method for continuous synthesis of 4-ethoxy-1,1,1-trifluoro-3-buten-2-one
发明人：HONG HAO; ZHANG ENXUAN; LU JIANGPING; SHEN WEI; YAN HONGLEI; LIU YUNPENG
权利人:LIAONING ASYMCHEM LABORATORIES CO LTD
摘要:Disclosed is a method for the continuous synthesis of 4-ethoxy-1,1,1-trifluoro-3-buten-2-one. The continuous synthesis method comprises: continuously introducing a raw material comprising vinyl ethyl ether, triethylamine and trifluoroacetic anhydride into a continuous reactor for a reaction to obtain a product system containing 4-ethoxy-1,1,1-trifluoro-3-buten-2-one, and continuously extracting the product system to obtain 4-ethoxy-1,1,1-trifluoro-3-buten-2-one. By using the continuous process, the above-mentioned raw materials can all be conveniently and accurately introduced into the continuous reactor, and after the reaction is completed, continuous extraction is also used for a post-treatment. The whole process is rapid, simple and efficient, the efficiency of the whole synthesis process is greatly increased, product destruction loss is reduced, and hidden safety hazards during batch production are avoided. After scaling up, there is no amplification effect, and safety and a relatively high synthesis efficiency can still be maintained.

专利号:US-6552213-B1
优先权日:2002-05-10
标 题:Stereoselective route to produce tris-O-substituted-(E)-1-(3,5-dihydroxyphenyl)-2-(4-hydroxyphenyl)ethene, an intermediate in the synthesis of trans-resveratrol
发明人：DESHPANDE PANDURANG BALWANT; SENTHILKUMAR UDAYAMPALAYAM PAL; ANDREW GNANAPRAKASAM
权利人:ORCHID CHEMICALS & PHARM LTD
摘要:The present invention relates to a new stereoselective method for the preparation of tris-O-substituted-(E)-1-(3,5-dihydroxyphenyl)-2-(4-hydroxyphenyl)ethene derivative of the formula (I) which is a key intermediate in the synthesis of trans-resveratrol (I, R2=R2=R3=H). The invention also provides a method for the exclusive synthesis of trans-isomer of compounds of formula (I) without any contamination of cis-isomer.

专利号:US-6117992-A
优先权日:1996-08-26
标题 :Reagents and process for synthesis of oligonucleotides containing phosphorodithioate internucleoside linkages
发明人：IYER RADHAKRISHNAN P
权利人:HYBRIDON INC
摘要:The invention provides new methods for synthesizing oligonucleotides containing at least one, and preferably all phosphorodithioate internucleoside linkages with less than 5% phosphoromonothioate contamination. This level of purity in the synthesis of phosphorodithoates has previously been very difficult to achieve with all existing methods. The invention further provides phosphorothioamidite nucleoside synthons comprising a sulfur protecting group that is stable under normal oligonucleotide synthesis conditions.

专利号:US-6048975-A
优先权日:1991-09-12
标 题:Process for the chemical synthesis of oligonucleotides
发明人：PFLEIDERER WOLFGANG; BERGMANN FRANK
权利人:HOECHST AG
摘要:A process for the chemical synthesis of oligonucleotides n Use of a dansylethoxycarbonyl group as base-labile 5'-hydroxyl protective group in the chemical synthesis of DNA and RNA and suitable synthetic processes. n The ease of detection of the dansyl protective group and the ease of elimination from the sugar residue of the nucleotide without side reactions make oligonucleotide synthesis possible with high yields in very small quantities.

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-5945524-A
优先权日:1990-09-14
标 题 :Process for the chemical synthesis of oligonucleotides
发明人：PFLEIDERER WOLFGANG; BERGMANN FRANK
权利人:HOECHST AG
摘要:Use of a dansylethoxycarbonyl group as base-labile 5'-hydroxyl protective group in the chemical synthesis of DNA and RNA and suitable synthetic processes. n The ease of detection of the dansyl protective group and the ease of elimination from the sugar residue of the nucleotide without side reactions make oligonucleotide synthesis possible with high yields in very small quantities.