Preparation of fluorinated nitroalkanes
    6.
    发明授权
    Preparation of fluorinated nitroalkanes 失效
    氟化硝基烷烃的制备

    公开(公告)号:US4533776A

    公开(公告)日:1985-08-06

    申请号:US575649

    申请日:1984-02-01

    摘要: In the preparation of an .alpha.-fluorinated nitroalkane of the formula ##STR1## in which R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are identical or different and individually represent hydrogen, fluorine, chlorine, bromine, alkyl, halogenoalkyl or cycloalkyl, orR.sup.1 and R.sup.3 have the meaning indicated andR.sup.2 and R.sup.4 together represent an alkylene group having 3-6 carbon atoms,by conjugated nitrofluorination of the corresponding olefin of the formula ##STR2## the improvement which comprises employing about 1.1 mols of hydrogen fluoride and 1 to 2 mols of nitric acid per mol of olefin and carrying out the reaction in the presence of an agent which binds water, e.g. chlorosulphonic acid, fluorosulphonic acid, sulphur trioxide, sulphur dioxide, thionyl chloride, thionyl fluoride, sulfuryl chloride or sulfuryl fluoride. The end products, some of which are known, are useful as intermediates in synthesizing herbicides.

    摘要翻译: 在制备其中R 1,R 2,R 3和R 4相同或不同并且各自表示氢,氟,氯,溴,烷基,卤代烷基或环烷基的式(Ia)的α-氟化硝基烷烃或R1和R3具有 所表示的含义,R2和R4一起表示具有3-6个碳原子的亚烷基,通过共轭硝基氟化相应的式“烯烃”烯烃,其改进包括使用约1.1摩尔氟化氢和1至2摩尔硝酸 酸/每摩尔烯烃,并在结合水的试剂存在下进行反应,例如 氯磺酸,氟磺酸,三氧化硫,二氧化硫,亚硫酰氯,亚硫酰氟,磺酰氯或硫酰氟。 其中一些已知的最终产物可用作合成除草剂的中间体。

    Nitrocubanes
    8.
    发明授权
    Nitrocubanes 失效
    硝基异氰酸酯

    公开(公告)号:US06222068B1

    公开(公告)日:2001-04-24

    申请号:US08228245

    申请日:1994-04-14

    IPC分类号: C07C6112

    摘要: An efficient direct functionalization of nitrocubanes has been achieved by irradiation of a solution in an oxalyl halide to yield halogenated and halocarbonylated derivatives of nitrocubanes.

    摘要翻译: 已经通过在草酰卤中的溶液照射产生氮化碳的卤代和卤代羰基化衍生物来实现氮代烷的有效直接官能化。