Process for preparation of 2-oxazolidinones
    1.
    发明授权
    Process for preparation of 2-oxazolidinones 失效
    2-恶唑烷酮的制备方法

    公开(公告)号:US4500717A

    公开(公告)日:1985-02-19

    申请号:US479400

    申请日:1983-03-28

    IPC分类号: C07D263/22

    CPC分类号: C07D263/22

    摘要: The invention is a process for the preparation of 2-oxazolidinones which comprises contacting a 2-hydroxyalkyl carbamate with an alkylene oxide or alkylene carbonate in the presence of a catalytic amount of a quaternary ammonium halide, quaternary phosphonium halide, a group I metal carbonate, hydroxide, oxide or halide, or a group II metal carbonate, hydroxide, oxide or halide under conditions such that a 2-oxazolidinone is prepared.

    摘要翻译: 本发明是制备2-恶唑烷酮的方法,其包括在催化量的季铵卤化物,季卤化鏻,第I族金属碳酸盐存在下使氨基甲酸2-羟烷基酯与烯化氧或碳酸亚烃酯接触, 氢氧化物,氧化物或卤化物,或第II族金属碳酸盐,氢氧化物,氧化物或卤化物,以制备2-恶唑烷酮。

    Preparation of 2-aminoalkanesulfonic acid
    2.
    发明授权
    Preparation of 2-aminoalkanesulfonic acid 失效
    2-氨基链烷磺酸的制备

    公开(公告)号:US4444694A

    公开(公告)日:1984-04-24

    申请号:US487478

    申请日:1983-04-22

    申请人: Hsin H. Hsieh

    发明人: Hsin H. Hsieh

    IPC分类号: C07C309/14 C07C143/02

    CPC分类号: C07C309/14

    摘要: The invention is a process for the preparation of the metal salt of 2-aminoalkanesulfonic acid which comprises contacting a 2-oxazolidinone with a water-soluble metal sulfite or a water-soluble metal hydrogen sulfite in aqueous solution under conditions such that a metal salt of 2-aminoethanesulfonic acid is prepared.

    摘要翻译: 本发明是制备2-氨基链烷磺酸的金属盐的方法,该方法包括使2-恶唑烷酮与水溶性金属亚硫酸盐或水溶性金属亚硫酸氢钠在水溶液中接触, 制备2-氨基乙磺酸。

    Catalytic oxidation of phenols to 1,4-benzoquinones
    3.
    发明授权
    Catalytic oxidation of phenols to 1,4-benzoquinones 失效
    苯酚催化氧化成1,4-苯醌

    公开(公告)号:US4317745A

    公开(公告)日:1982-03-02

    申请号:US216107

    申请日:1980-12-15

    申请人: Hsin H. Hsieh

    发明人: Hsin H. Hsieh

    摘要: A catalyst for the oxidation of phenols to 1,4-benzoquinones in the gas phase with an oxygen containing gas such as air, substantially pure oxygen, or mixtures thereof. The composition of the catalyst comprises vanadium pentoxide or ammonium metavanadate, the sulfate salt of an alkali metal or of ammonia, the pyrosulfate salt of an alkali metal or of ammonia, an iron sulfate, boric acid, and silica.

    摘要翻译: 一种催化剂,用于在含有气体如空气,基本纯氧或其混合物的气相中将酚氧化为1,4-苯醌。 催化剂的组成包括五氧化二钒或偏钒酸铵,碱金属或氨的硫酸盐,碱金属或氨的硫酸氢盐,硫酸铁,硼酸和二氧化硅。