Benzocycloalkenecarboxylic acid and process for its preparation
    1.
    发明授权
    Benzocycloalkenecarboxylic acid and process for its preparation 失效
    苯并二恶唑酸及其制备方法

    公开(公告)号:US5177257A

    公开(公告)日:1993-01-05

    申请号:US776385

    申请日:1991-11-20

    CPC分类号: C07C62/38 C07C51/487

    摘要: The novel (S)-4-(2-bromobenzoyl)-5-hydroxy-benzocyclobutene-1-carboxylic i.e. the compound of the formula ##STR1## in free form or in salt form, can be used as active ingredient in pharmaceutical preparations and can be prepared by a novel process, which is characterized in that racemic 4-(2-bromobenzoyl)-5-hydroxy-benzocyclobutene-1-carboxylic acid is reacted at elevated temperature with at least the equimolar amount of quinine in an alcoholic solvent for from approximately 6 to approximately 48 hours, the quinine salt of the (S)-4-(2-bromobenzoyl)-5-hydroxy-benzocyclobutene-1-carboxylic acid, precipitated in crystalline form as the direct reaction product, is separated from the reaction mixture, and the (S)-4-(2-bromobenzoyl)-5-hydroxy-benzocyclobutene-1-carboxylic acid is set free from this salt by acid treatment in a customary manner, and, if desired, this free acid is converted into a salt.

    摘要翻译: PCT No.PCT / CH91 / 00064 Sec。 371日期1991年11月20日 102(e)1991年11月20日日期PCT 1991年3月19日PCT公布。 WO91 / 14671 PCT出版物 日期为1991年10月3日。新型(S)-4-(2-溴苯甲酰基)-5-羟基 - 苯并环丁烯-1-羧酸,即游离形式或盐形式的式(I)化合物, 可以用作药物制剂中的活性成分,并且可以通过一种新的方法制备,其特征在于外消旋的4-(2-溴苯甲酰基)-5-羟基 - 苯并环丁烯-1-羧酸在升高的温度下至少与 在酒精溶剂中等摩尔量的奎宁约6至约48小时,(S)-4-(2-溴苯甲酰基)-5-羟基 - 苯并环丁烯-1-羧酸的奎宁盐以晶体形式沉淀 作为直接反应产物,与反应混合物分离,并以常规方式通过酸处理使(S)-4-(2-溴苯甲酰基)-5-羟基 - 苯并环丁烯-1-羧酸不含该盐 ,如果需要,将该游离酸转化成盐。

    Silanes, process for their preparation, and their use
    2.
    发明授权
    Silanes, process for their preparation, and their use 失效
    硅烷,其制备过程及其用途

    公开(公告)号:US4695643A

    公开(公告)日:1987-09-22

    申请号:US782349

    申请日:1985-10-01

    摘要: Compounds of the formula Ia ##STR1## in which X and R.sup.1 to R.sup.6 are as defined in the claims, are obtainable by reacting monochlorosilanes of the formula II ##STR2## with tetrasubstituted ethylenes of the formula III ##STR3## X as Cl and Br can be replaced by ester groups of inorganic and organic acids. The compounds of the formula I and those with other ester groups are suitable especially as a protective-group reagent for hydroxyl, mercapto, carboxyl, amino and amide groups.

    摘要翻译: 其中X和R 1至R 6如权利要求中所定义的式Ia(Ia)化合物可通过使式II(II)的一氯代硅烷与式III的四取代乙烯反应获得。 (III)X为Cl和Br可以被无机酸和有机酸的酯基代替。 式I化合物和其它酯基的化合物特别适用作羟基,巯基,羧基,氨基和酰胺基团的保护基试剂。

    Process for producing 1-[2-(2,4-dichlorophenyl)-pentyl]-1H-1,2,4-triazole
    3.
    发明授权
    Process for producing 1-[2-(2,4-dichlorophenyl)-pentyl]-1H-1,2,4-triazole 失效
    1- [2-(2,4-二氯苯基) - 戊基] -1H-1,2,4-三唑的制备方法

    公开(公告)号:US4556717A

    公开(公告)日:1985-12-03

    申请号:US505019

    申请日:1983-06-16

    摘要: 1-[2-(2,4-Dichlorophenyl)-pentyl]-1H-1,2,4-triazole can be produced, in a novel, simple, economical and isomer-free form, by reacting 2-(2,4-dichlorophenyl)-valeronitrile, in the presence of hydrogen, an acid and a hydrogenation catalyst, with a compound H.sub.2 N--NH--R to a compound of the formula ##STR1## hydrogenating the compound (III) catalytically to a compound ##STR2## hydrolysing compounds (IV) wherein R is not hydrogen, and converting the compounds (IV) wherein R=H, or salts thereof, with formamide and/or [3-(dimethylamino)-2-azaprop-2-en-1-ylidene]-dimethylammonium chloride, into 1-[2-(2,4-dichlorophenyl)-pentyl]-1H-1,2,4-triazole, or converting compounds (IV) wherein R=--COR', with aqueous formic acid, into the corresponding N,N'-bisformyl derivatives, and reacting these with formamide, optionally in the presence of NH.sub.3, to 1-[2-(2,4-dichlorophenyl)-pentyl]-1H-1,2,4-triazole. R in the formulae is hydrogen, --CHO, --COR', --COOR' or --CONH.sub.2, and R' is C.sub.1 -C.sub.4 -alkyl, benzyl or phenyl.1-[2-(2,4-Dichlorophenyl)-pentyl]-1H-1,2,4-triazole exhibits fungicidal activity, and can be used to control phytopathogenic fungi.

    摘要翻译: 1- [2-(2,4-二氯苯基) - 戊基] -1H-1,2,4-三唑可以以新颖简单,经济和异构体的形式通过2-(2,4 (III)的化合物与化合物H2N-NH-R反应,使化合物(III)催化反应到化合物(III) (IV)水解化合物(Ⅳ),其中R不是氢,并将其中R = H的化合物(Ⅳ)或其盐与甲酰胺和/或[3-(二甲基氨基)-2-氮杂丙-2-酮 烯-1-基] - 二甲基氯化铵转化成1- [2-(2,4-二氯苯基) - 戊基] -1H-1,2,4-三唑或转化其中R = -COR'的化合物(Ⅳ) 与甲酸水溶液加入到相应的N,N'-双甲酰基衍生物中,并将其与甲酰胺(任选在NH 3存在下)与1- [2-(2,4-二氯苯基) - 戊基] -1H-1反应, 2,4-三唑。 式中的R是氢,-CHO,-COR',-COOR'或-CONH 2,R'是C 1 -C 4烷基,苄基或苯基。 1- [2-(2,4-二氯苯基) - 戊基] -1H-1,2,4-三唑具有杀真菌活性,可用于控制植物病原真菌。