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    • 2. 发明授权
    • Preparation of dialkyldialkoxysilanes and related compounds
    • 二烷基二烷氧基硅烷及相关化合物的制备
    • US4683321A
    • 1987-07-28
    • US923184
    • 1986-10-27
    • Gunner E. Nelson
    • Gunner E. Nelson
    • C07F7/18
    • C07F7/1876
    • Alkali metal aluminum tetraalkyls can alkylate tetraalkyl silicates and alkyltrialkoxysilanes, Si(OR).sub.4 and RSi(OR).sub.3, respectively. The product in each case is predominately the dialkylate. With tetraalkyl silicates, both of the alkyl groups bonded to silicon in the dialkylate product are derived from the metal tetraalkyl. With alkyltrialkoxysilanes, the silicon atom in the dialkylate product is (a) bonded to one alkyl group detained from the metal tetraalkyl, and (b) is also bonded to an alkyl group--that was bonded to silicon--in the silicon-containing starting material. Thus, the alkyl groups in the dialkylate product that are bonded to silicon can be alike or different. The dialkyldialkoxysilane products produced by this invention can be reduced to the corresponding silanes; e.g., R.sub.2 SiH.sub.2, by using an alkyl aluminum tetrahydride as the reducing agent. The dialkyldialkoxysilanes as well as the dialkylsilanes produced are useful as chemical intermediates.
    • 碱金属铝四烷基可以分别烷基化四烷基硅酸盐和烷基三烷氧基硅烷,Si(OR)4和RSi(OR)3。 每种情况下的产品主要是二烷基酯。 对于四烷基硅酸盐,与二烷基化物产物中的硅键合的两个烷基都衍生自金属四烷基。 对于烷基三烷氧基硅烷,二烷基化物产物中的硅原子是(a)与一个残留在金属四烷基上的烷基键合,和(b)也与含硅原料中与硅键合的烷基键合 。 因此,与硅键合的二烷基化物产物中的烷基可以相同或不同。 本发明生产的二烷基二烷氧基硅烷产物可以还原成相应的硅烷; 例如R 2 SiH 2,通过使用四氢化烷基铝作为还原剂。 二烷基二烷氧基硅烷以及所生产的二烷基硅烷可用作化学中间体。
    • 6. 发明授权
    • Reduction using NaAlEt.sub.2 H.sub.2
    • 使用NaAlEt {hd 2 {b H {HD 2
    • US4031143A
    • 1977-06-21
    • US337902
    • 1973-03-05
    • Gunner E. Nelson
    • Gunner E. Nelson
    • C07B31/00C07C29/00
    • C07B31/00
    • It is disclosed that a process wherein a reducible compound is reduced by an addition reaction to aluminum dihydrocarbon dihydrides of sodium, potassium or lithium followed by hydrolysis to remove the aluminum is improved by subjecting to oxidation with molecular oxygen the product from the aluminum addition prior to the hydrolysis operation. The intervening oxidation operation converts al--R bonds in the addition product into al-O-R bonds, R being hydrocarbon, preferably alkyl, the result being that upon hydrolysis an alcohol is produced from those groups rather than a hydrocarbon. The by-product alcohol thus produced is easier to dispose of without serious ecological disadvantages which is a significant improvement over the situation that exists when hydrocarbon is released.
    • 公开了通过对钠,钾或锂的二氢二氢二氢化铝的加成反应还原可还原化合物,然后水解除去铝的方法,通过用分子氧氧化来自铝添加的产物, 水解操作。 中间氧化操作将加成产物中的α-R键转化为α-O-R键,R为烃,优选为烷基,其结果是在水解时,由这些基团而不是烃产生醇。 如此生产的副产物醇更容易处理而没有严重的生态缺陷,这是与释放碳氢化合物时存在的情况相比有显着改善的。