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卤代物在无水乙醚或四氢呋喃中和金属镁作用生成烷基卤化镁RMgX，这种有机镁化合物被称作格氏试剂(Grignard Reagent)。格氏试剂作为亲核试剂可以与醛、酮、羧酸等化合物发生加成反应，这类反应被称作格氏反应(Grignard Reaction)。格氏试剂一经发现，此反应就成为 ...