Grignard reagent : Grignard reagent are prepared by the action of alkyl halide on dry burn magnesium in presence of alcohol free dry ether.

         Dry ether dissolves the grignard solvent through solvation.

         Grignard reagents are never cut off in free sate on account of their explosive nature.

•  For given alkyl radical the ease of formation of a grignard solvent is, Iodide > Bromide > Chloride usually alkyl bromides are used.
•  For a given halogen, the ease of formation of grignard reagent is, CH₃X > C₂H₅X > C₃H₇X............
•  Since tertiary alkyl iodides terminate HI to form an alkene, tertiary alkyl chlorides are used in place of tertiary alkyl iodides.
•  Grignard reagent cannot be created from a compound which consists in addition to halogen, some reactive group such as -OH because it will react rapidly with the grignard reagent.

         The C-Mg bond in grignard reagent is somewhat covalent but highly polar.

         The alkyl group acts as carbanion. The majority of reaction of grignard reagent fall into two groups:

         (i) Double decomposition with compound containing active hydrogen atom or reactive halogen atom

         (ii) Addition reaction with compounds containing

 etc.    

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