CAS: 616-42-2; Dimethylsulfite

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623-81-4 2181-44-4

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CAS号67-56-1 甲醇 | CAS号109-87-5 甲缩醛 | CAS号624-91-9 亚硝酸甲酯 | CAS号186581-53-3 重氮甲烷 | CAS号35506-85-5 BENZYL SULFITE | CAS号62516-55-6 1-chloro-2-(2-c... | CAS号77-78-1 硫酸二甲酯 | CAS号110-86-1 吡啶 | CAS号41239-98-9 2-chloroethyl c... | CAS号154318-75-9 4-(叔丁基)苯基三氟甲磺酸酯 | CAS号91-23-6 2-硝基苯甲醚 | CAS号421-20-5 氟磺酸甲酯 | CAS号91-16-7 1,2-二甲氧基苯 | CAS号20627-73-0 ORTHO-NITROBENZ... | CAS号18621-29-9 (2,2-DIMETHOXY-... | CAS号115-10-6 二甲醚 | CAS号74-88-4 碘甲烷 | CAS号938-16-9 2-甲基丙酮 | CAS号103-26-4 肉桂酸甲酯

亚硝酸甲酯置于氯化亚砜体系中,化学反应生成 亚硫酸二甲酯
参考文献:De459738
标题:De459738

专利信息

专利号:US-2009131688-A1
优先权日:2007-11-21
标 题 :Method for the synthesis of 4-benzofuran-carboxylic acid
发明人：BURGOS ALAIN; MARUANI MARTINE; PERRIN FLORENCE; FREIN STEPHANE
权利人:ZACH SYSTEM
摘要:The invention concerns a novel method for synthesis of 4-benzofuran-carboxylic acid or alkyl ester thereof. n This method is characterized in that a reaction for aromatization of a compound of formula (II) is performed for the synthesis of the compound of formula (I), according to the scheme A2 below: n n n n n n n n n n wherein R independently represents hydrogen or a linear or branched C 1 - 15 alkyl group. n With the invention, it is possible to industrially synthesize 4-benzofuran-carboxylic acid or alkyl ester thereof with good yield and very good purity.

专利号:WO-9616071-A1
优先权日:1994-11-21
标题:PROCESSES FOR THE SYNTHESIS OF 3'-SUBSTITUTED LEWISx COMPOUNDS
发明人：SRIVASTAVA OM; IPPOLITO ROBERT; SRIVASTAVA GEETA; SZWEDA ROMAN; OHUCHI TOSHIO
权利人:GLYCOMED INC; SRIVASTAVA OM; IPPOLITO ROBERT; SRIVASTAVA GEETA; SZWEDA ROMAN; OHUCHI TOSHIO
摘要:Disclosed are processes for the chemical synthesis of 3'-substituted Lewis-OR compounds where R is an aglycon of at least one carbon atom. One particular compound prepared by the processes of this invention is 8-methoxycarbonyl-octyl-2-acetamido-3-O-( alpha -L-fucopyranosyl)-4-O-[3-O-sulfo- beta -D-galactopyranosyl]-2-deoxy- beta -D-glucopyranoside.

专利号:US-6518438-B2
优先权日:1996-08-23
标题:Preparation of cyclohexene carboxylate derivatives
发明人：KENT KENNETH M; KIM CHOUNG U; MCGEE LAWRENCE R; MUNGER JOHN D; PRISBE ERNEST J; POSTICH MICHAEL J; ROHLOFF JOHN C; KELLY DAPHNE E; WILLIAMS MATTHEW A; ZHANG LIJUN
权利人:GILEAD SCIENCES INC
摘要:The present invention provides new synthetic methods and compositions. In particular, new methods of preparing intermediates useful in the synthesis of neuraminidase inhibitors and compositions useful as intermediates that are themselves useful in the synthesis of neuraminidase inhibitors are provided.

专利号:US-2009264680-A1
优先权日:2004-07-07
标题:Process for the synthesis and purification of (4-methoxybutyl) (4-trifluoromethylphenyl) methanone
发明人：CASTELLIN ANDREA; GREGORI LUCA; GONZALES TRUEBA GUADALUPE; RUBELLO ALBINO; NICOLE ANDREA
权利人:CASTELLIN ANDREA; GREGORI LUCA; GONZALES TRUEBA GUADALUPE; RUBELLO ALBINO; NICOLE ANDREA
摘要:A process for the preparation of 4-trifluoromethylvalerophenone is described. The process described is a three step process comprising the synthesis of organomagnesium specie, coupling reaction between the organomagnesium specie and trifluoromethylbenzonitrile or trifluoromethylbenzoyl chloride and preferably a purification of the product obtained in suitable reaction conditions. In the process an extraction phase of the final product is not required.

专利号:US-5637775-A
优先权日:1994-04-28
标 题 :Process for the preparation of halogenated ethers
发明人：GALLEGRA PASQUALE; DEGISCHER GERHARD
权利人:SCHWEIZERHALL SAEUREFAB
摘要:The invention relates to a process for the preparation of compounds of formula I (I) wherein R is mono- or disubstituted lower alkyl, the substituents being selected from halogen and lower alkoxy, with the proviso that said substituents are not present at the carbon atom of the lower alkyl radical R linking the group R to the remainder of the molecule of formula I; R1 is hydrogen, lower alkyl, phenyl or phenyl-lower alkyl; and X is chloro or bromo; which comprises reacting an acetal of formula II, (II) wherein R and R1 are as defined above, with at least one compound of formula R2-X, wherein R2 is hydrogen or X-SO, in which last mentioned case the reaction mixture must contain a catalytically effective amount of N,N-di-lower alkyl-lower alkanoylamide(s) and wherein X is as defined with respect to the compounds of formula I. The compounds of formula I are useful intermediates, suitably for the synthesis of pharmaceutical or fungicidal compounds.

专利号:US-2025207163-A1
优先权日:2022-03-25
标 题:Methods and apparatus for synthesizing nucleic acids
发明人：HOPKINS PATRYCJA A; SHAHSAVARI SHAHIEN; BEGOYAN VAGARSHAK; NJUMA OLIVE J; DEBENHAM HOLLY S; EFCAVITCH J WILLIAM; ALBIZATI KIM F
权利人:MOLECULAR ASSEMBLIES INC
摘要:Methods for the synthesis of polynucleotides using polymerases nucleotide analogs with labile terminator groups that allow stepwise addition of nucleotides are described. These nucleotide analogs may have a modification on 3′, 2′, or 3′-2′-bridged hydroxyl groups or on nucleobase moieties and can be used in the synthesis of natural or modified polynucleotides suitable for use in biological systems. The labile terminator groups are removed under mild conditions or by enzymes. They are accepted as substrates by polymerases. The synthesis may be carried out on a surface.