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    • 98. 发明授权
    • Preparation of organolead compounds
    • 有机物化合物的制备
    • US3057897A
    • 1962-10-09
    • US78486059
    • 1959-01-05
    • ETHYL CORP
    • ROBINSON GENE C
    • C07F3/00C07F3/02C07F3/06C07F5/02C07F5/06C07F7/00C07F7/08C07F7/22C07F7/24C07F9/90C07F9/92C07F17/00C08J9/00
    • C08J9/0061C07F3/00C07F3/02C07F3/06C07F5/027C07F5/062C07F7/00C07F7/0827C07F7/2212C07F7/24C07F9/90C07F9/92C07F17/00C08J2375/04C08J2483/00
    • A polyvalent metal (which term includes arsenic, boron and silicon) is reacted with an organic ester of an inorganic acid and a bimetallic organic compound in which one metal is a Group Ia or IIa metal (Doming) and the other is a Group IIb or IIIa metal (including boron). The organic ester of an inorganic acid is of formula where either R or R1 is an organic radical (preferably alkyl and the other is hydrogen or an organic radical, a is 1 or 2 and Z is an anion, preferably sulphate, phosphate or halide. Specified polyvalent metal include beryllium, magnesium, calcium, mercury, zinc, boron, aluminium, gallium, silicon, lead, tin, arsenic and antimony. It is preferred to use these metals in a finely divided state. The bimetallic organic compound is of formula M(M1YaY1b)c where M is a Group Ia or IIa metal, M1 is a Group IIb or IIIa metal, Y is an organic radical preferably a hydrocarbon radical having up to 18 carbon atoms, Y1 is an electron donating ligand such as halogen, an organic radical (especially C1-C18 hydrocarbyl), an alcohol residue or hydrogen. a is 1 to 4 inclusive, b is 0-3 inclusive and c is the valency of M. Typical such compounds are sodium tetraethyl aluminium, sodium tetraoctyl aluminium, sodium triethylaluminium hydride, sodium diethyl aluminium dichloride; a list is given. The reaction is usually carried out at a temperature between -20 DEG C. and 200 DEG C. at a pressure not above 1000 psi. Diluents or solvents are not essential but may be used when the bimetallic organic compound is a solid. Specified solvents include hydrocarbons, ethers and amines, particularly tertiary amines. If desired, the process may be modified by using a hydride of a Group Ia or IIa metal and an olefin in the presence of a compound of a metal capable of forming a complex with said metal hydride, thus producing the bimetallic organic compound in situ.