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    • 5. 发明授权
    • Method of preparation of lithium alkylamides
    • 烷基酰胺锂的制备方法
    • US5493038A
    • 1996-02-20
    • US204724
    • 1994-03-02
    • Randy W. HallConrad W. KamienskiRobert C. MorrisonJohn F. Engel
    • Randy W. HallConrad W. KamienskiRobert C. MorrisonJohn F. Engel
    • C07F1/00C07F7/10
    • C07F7/10C07F1/005
    • A process for quickly preparing easily separable solutions of lithium alkylamides, as exemplified by the formula(R.sub.3 M).sub.x NLi(R1).sub.y.(LB).sub.z (I)wherein M is silicon or carbon, R and R.sup.1 are C.sub.1 -C.sub.8 alkyl, cycloalkyl or alkylene groups, LB is a Lewis base, x and y are integers equaling 2, and z is greater than 1, comprising the steps of reacting lithium metal in bulk form with an alkylamine in mole ratios of metal to alkylamine ranging from 2 to 1 to 10 to 1 in a solvent selected from ethereal or selected from the group consisting of conjugated dienes, vinyl aromatic and polycyclic aromatic compounds, under an inert atmosphere at elevated temperatures for 1 to 10 hours, cooling the product and separating the product solution from the unreacted lithium metal in the reactor.
    • 一种快速制备易于分离的烷基酰胺锂溶液的方法,如式(R3M)xNLi(R1)y。(LB)z(I)所示,其中M是硅或碳,R和R1是C1-C8烷基,环烷基 或亚烷基,LB是路易斯碱,x和y是等于2的整数,z大于1,包括以下步骤:使块状的金属锂与金属与烷基胺的摩尔比范围为2至1的烷基胺反应 在惰性气氛下,在高温下1-10小时,在选自芳烃或选自共轭二烯,乙烯基芳族化合物和多环芳香族化合物的溶剂中的溶剂为10至1,冷却产物并将产物溶液与 未反应的锂金属在反应器中。