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    • 5. 发明申请
    • Method for Producing 2-Formylfuran-4-Boronic Acid by the Metalation of 4-Halofurfural Acetals in the Presence of Suitable Boronic Acid Esters or Anhydrides
    • 在合适的硼酸酯或酸酐存在下通过4-卤代呋喃醛缩合生产2-甲基呋喃-4-硼酸的方法
    • US20080188671A1
    • 2008-08-07
    • US11912157
    • 2006-05-10
    • Andreas MeudtSven NerdingerMichael ErbesWilliam Vogt
    • Andreas MeudtSven NerdingerMichael ErbesWilliam Vogt
    • C07F5/02
    • C07F5/025
    • Methods for producing furfural-4-boronic acid by the reaction of furfural acetals (I), which are substituted by halogen in position 4, with boronic acid esters or anhydrides, by the subsequent metalation of compound (I) and the simultaneous or subsequent reaction with a boronic acid ester or anhydride to form an acetal-protected furfural-4-boronic acid ester. This product is subjected to acid hydrolysis to form furfural-4-boronic acid. In the formulae: X represents chlorine, bromine or iodine; R represents a branched, unbranched and/or cyclic, optionally substituted C1-C20 alkyl group, an optionally substituted C6-C12 aryl group or an optionally substituted C3-C8 cycloalkyl group, the two groups R together can form a ring; R′, R″, R′″ independently of one another represent acylic or cyclic, branched or unbranched, optionally substituted C1-C20 alkyl groups, or optionally substituted aryl groups, optionally two of the groups R′, R″ and R′″ together form a ring, or represent additional groups B(OR)3.
    • 通过随后的化合物(I)的金属化和通过化合物(I)的金属化以及同时或随后的反应,通过由位置4的卤素取代的糠醛缩醛(I)与硼酸酯或酸酐反应制备糠醛-4-硼酸的方法 与硼酸酯或酸酐形成缩醛保护的糠醛-4-硼酸酯。 将该产物进行酸水解形成糠醛-4-硼酸。 式中X表示氯,溴或碘; R表示支链,非支链和/或环状的任选取代的C 1 -C 20烷基,任选取代的C 6 -C 20烷基, 芳基或任选取代的C 3 -C 8环烷基,两个基团R一起可以形成环; R',R“,R”'彼此独立地表示酰基或环状,支链或非支链的任选取代的C 1 -C 20烷基,或任选地 取代的芳基,任选地两个基团R',R“和R”'一起形成环,或代表另外的基团B(OR)3。
    • 8. 发明授权
    • Process for the preparation of substituted phenylboronic acids
    • 制备取代苯基硼酸的方法
    • US06576789B1
    • 2003-06-10
    • US09553036
    • 2000-04-20
    • Steffen HaberAndreas MeudtStefan SchererFrank Vollmueller
    • Steffen HaberAndreas MeudtStefan SchererFrank Vollmueller
    • C07F502
    • C07F5/025C07F3/02Y02P20/55
    • Compounds of the formula (I) in which Q1 and Q2 are each OH or form a trimeric boric anhydride, Z is CHO, CH2Y, X or a protected aldehyde group, and X is CN, COOH, COCl, CONH2 or C(OR)3, and Y is OH or NH2, and Z is in the o-, m- or p-position to the boronic acid radical, are prepared by a) reacting a compound of the formula (II)  with Mg in the presence of an anthracene compound and, if desired, a transition-metal halide and, if desired, an Mg halide or in the presence of a transition-metal halide and, if desired, an Mg halide, to give the corresponding arylmagnesium chloride, b) reacting the latter with a borate of the formula B(OR′)3 and hydrolyzing the product, with removal of the aldehyde protecting group, c) and, if desired, oxidizing or reducing the free aldehyde group.
    • 式(I)化合物,其中Q 1和Q 2各自为OH或形成三聚硼酸酐,Z为CHO,CH 2 Y,X或保护的醛基,X为CN,COOH,COCl,CONH 2或C(OR)3 ,并且Y是OH或NH 2,并且Z与硼酸根在o-,m-或p-位,是通过以下方法制备的:a)在蒽化合物存在下使式(II)化合物与Mg反应制备 如果需要,可以使用过渡金属卤化物,如果需要,还可以在过渡金属卤化物存在下,或者如果需要的话使用卤化镁,得到相应的芳基氯化镁,b)使后者与 式B(OR')3的硼酸盐,并水解产物,除去醛保护基,c),如果需要,氧化或还原游离醛基。
    • 10. 发明授权
    • Method for producing amines from hydroxamic acids
    • 从异羟肟酸生产胺的方法
    • US07468460B2
    • 2008-12-23
    • US11995000
    • 2006-07-05
    • Andreas MeudtClaudius Boehm
    • Andreas MeudtClaudius Boehm
    • C07C261/00C07C209/00
    • C07C269/00C07C209/56C07C271/12C07C271/28
    • A method for producing unprotected or carbamate-protected amines of formulae (II) and (III) or R1—NH2 (II) or R1—NHCO2R2 (III) by reacting hydroxamic acids of formula (I) (R1 CONHOH) with a) alkylpliosphonic acid anhydrite's, b) alcohol R2OH and c) optionally with a base, at a temperature ranging from 100 to +120°C., wherein the hydroxainic acid (I) is produced prior to or during reacting (in situ) and R1 is an optionally substituted linear or branched C1-C12 alkyl radical, substituted C3-C10 cycloalkyl, alkenyl, aryl or heteroaryl radical and R2 is an open-chain, cyclic or branched allyl, aryl or C1 to C12-alkyl radicals, or aryloxy, allyloxy or alkoxy radical possibly substituted with open-chain, cyclic or branched C1 to C12-alkyl radicals.
    • 通过使式(I)(R1 CONHOH)的异羟肟酸与a)烷基膦酸反应制备式(II)和(III)或R 1 -NH 2(II)或R 1 -NHCO 2 R 2(III)的未保护或氨基甲酸酯保护的胺的方法 酸酐酸盐,b)醇R2OH和c)任选地与碱反应,在100至+ 120℃的温度范围内,其中异羟肟酸(I)在反应之前或期间(原位)产生,并且R 1是 任选取代的直链或支链C 1 -C 12烷基,取代的C 3 -C 10环烷基,烯基,芳基或杂芳基,R 2是开链,环状或支链烯丙基,芳基或C 1至C 12 - 烷基,或芳氧基,烯丙氧基或 可以被开链,环状或支链C 1 -C 12烷基取代的烷氧基。