Selective bromination of aromatic compounds using potassium tribromide
    1.
    发明授权
    Selective bromination of aromatic compounds using potassium tribromide 失效
    使用三溴化钾选择性溴化芳族化合物

    公开(公告)号:US4940807A

    公开(公告)日:1990-07-10

    申请号:US365209

    申请日:1989-06-12

    摘要: Electron-rich aromatic compounds are selectively brominated in good yield in the presence of water using potassium tribromide as the brominating agent. In this way monobromination is favored and dibromination is suppressed as compared to the use of elemental bromine as the brominating agent.

    摘要翻译: 富含电子的芳族化合物在水的存在下以三溴化钾作为溴化剂以良好的产率被选择性溴化。 与使用元素溴作为溴化剂相比,这样一溴化是有利的,二溴化被抑制。

    Preparation of silane and metal aluminum halide co-product
    2.
    发明授权
    Preparation of silane and metal aluminum halide co-product 失效
    硅烷和金属卤化铝共同产品的制备

    公开(公告)号:US4778668A

    公开(公告)日:1988-10-18

    申请号:US944756

    申请日:1986-12-22

    IPC分类号: C01B33/04 C01F7/48 C01B9/00

    CPC分类号: C01F7/48 C01B33/043

    摘要: Silicon halides and silicon hydrohalides, such as SiCl.sub.4, SiBr.sub.4, and SiHCl.sub.3 react with alkali metal aluminum hydrides such as NaAlH.sub.4 and LiAlH.sub.4 in the presence of a hydrocarbon reaction medium; e.g., toluene, and a tetraalkyl ammonium salt, and in the substantial absence of an ether, to produce silane and a metal aluminum halide co-product which is not tightly complexed to an organic substance.

    摘要翻译: 在烃反应介质存在下,卤化硅和硅氢化物如SiCl 4,SiBr 4和SiHCl 3与碱金属铝氢化物如NaAlH 4和LiAlH 4反应; 例如甲苯和四烷基铵盐,并且基本上不存在醚,以产生与有机物质不紧密结合的硅烷和金属卤化铝共同产物。

    Vapor deposition of arsenic
    3.
    发明授权
    Vapor deposition of arsenic 失效
    砷的气相沉积

    公开(公告)号:US4814203A

    公开(公告)日:1989-03-21

    申请号:US156312

    申请日:1988-02-16

    IPC分类号: C23C16/30 C23C16/00

    CPC分类号: C23C16/301

    摘要: In a vapor deposition process (e.g. MOCVD) for producing an arsenic-containing film on a substrate by thermally decomposing at least a vaporous organo arsenic compound upon a heated substrate, the improvement wherein the organo arsenic compound consists essentially of a C.sub.1 to C.sub.3 monoalkylarsine carried to the heated substrate by means of a flow of an inert carrier gas.

    摘要翻译: 在用于通过在加热的底物上热分解至少一种蒸气有机砷化合物来在基底上产生含砷膜的气相沉积方法(例如MOCVD)中,有机砷化合物基本上由携带的C1-C3单烷基胂组成 通过惰性载气流向加热的基底。

    Production of organic vanadates
    4.
    发明授权
    Production of organic vanadates 失效
    生产有机钒酸盐

    公开(公告)号:US4739086A

    公开(公告)日:1988-04-19

    申请号:US913256

    申请日:1986-09-30

    IPC分类号: C07C29/68 C07F9/00

    CPC分类号: C07F9/005 C07C29/685

    摘要: Vanadium oxytrihalide (e.g., VOCl.sub.3) is reacted with alkali metal alkoxide (e.g., NaOEt) in the presence of a diluent (e.g., EtOH) that boils below the boiling point of the organic vanadate being produced. The diluent is then distilled from the reaction mixture and thereafter the organic vanadate is distilled from a suspension of the reaction products in an inert liquid hydrocarbon (e.g., mineral oil) that boils above the boiling point of the organic vanadate produced. This higher boiling hydrocarbon is preferably added to the reaction mixture after the diluent has been distilled off. The process avoids hydrogen halide evolution and consequent need for gaseous ammonia. Solvent extractions are not required, the process may be conducted in a single reactor, and the products are readily formed in high yields.

    摘要翻译: 氧化三卤化物(例如VOCl 3)与碱金属醇盐(例如NaOEt)在稀释剂(例如EtOH)的存在下反应,稀释剂(例如EtOH)沸点低于所生产的有机钒酸盐的沸点。 然后将稀释剂从反应混合物中蒸馏出来,然后将有机钒酸盐从反应产物的悬浮液中蒸发到沸点高于所生成的有机钒酸盐的沸点的惰性液体烃(例如矿物油)中。 在蒸馏出稀释剂之后,优选将该较高沸点的烃加入到反应混合物中。 该方法避免了卤化氢的逸出,并因此需要气态氨。 不需要溶剂萃取,该方法可以在单个反应器中进行,并且产物容易以高产率形成。

    Metal alkyl process
    5.
    发明授权
    Metal alkyl process 失效
    金属烷基工艺

    公开(公告)号:US4611071A

    公开(公告)日:1986-09-09

    申请号:US701292

    申请日:1985-02-13

    IPC分类号: C07F9/72 C07F9/90 C07F9/94

    CPC分类号: C07F9/904 C07F9/723 C07F9/94

    摘要: Metal alkyls such as trimethyl arsine are made in improved yields by reacting a metal halide, e.g. AsCl.sub.3, with a Grignard reagent such as methyl magnesium bromide complexed with a polyether such as di(2-methoxyethyl)ether.

    摘要翻译: 金属烷基如三甲基胂通过金属卤化物如 AsCl 3与Grignard试剂如甲基溴化镁与聚醚如二(2-甲氧基乙基)醚络合。