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Grignard reagent, a very useful starting...

Grignard reagent, a very useful starting compound for a number of organic reactions can be prepared by

A

reaction of alkyl halides with a solution of magnesium hydroxide

B

reaction of alkyl halides with a solution of magnesium powder in presence of dry ether

C

reaction of `MgCl_2` with ether and alcohol

D

reaction of alkyl halide with magnesium in presence of alcohol.

Text Solution

Verified by Experts

The correct Answer is:
B
`RX+Mgoverset("dry ether")tounderset("Grignard reagent")(R-Mg-X)`
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NCERT FINGERTIPS-HALOALKANES AND HALOARENES-Chemical Reactions
  1. An alkyl chloride produces a single alkene on reaction with sodium eth...

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  2. Trans-2-phenyl-1-bromocyclopentane on reaction with alcoholic KOH prod...

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  3. Identify (Z) in the following reaction series, C2H5overset("Alcohol...

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  4. The ease of dehydrohalogenation of alkyl halide with alcoholic KOH is-

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  5. Elimination of bromine from 2-bromobutane results in the formation of ...

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  6. Which of the following products does not match correctly with the reac...

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  7. In the reaction , CH(3)-underset(Br)underset(|)(CH)-CH(3)overset(alc...

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  8. Grignard reagent, a very useful starting compound for a number of orga...

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  9. The order of reactivities of methyl halide in the formation of Grignar...

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  10. Identify the products X and Y in the given reaction, CH3-underset(Br...

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  11. Alkyl halides react with metallic sodium in dry ether producing

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  12. On treating a mixture of two alkyl halides with sodium metal in dry et...

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  13. Chlorobenzene on treatment with sodium in dry ether gives diphenyl. Th...

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  14. Primary alkyl halide C4H9Br (X) reacts with alc. KOH to give compound ...

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  15. The main difference in C-X bond of a haloalkane and a haloarene is

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  16. Aryl halides are less reactive towards nucleophilic substitution react...

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  17. Chlorobenzene can be converted into phenol by heating in aqueous sodi...

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  18. Match the column I with column II and mark the appropriate choice.

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  19. The end product (Q) in the following sequence of reaction is

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  20. Which of the following reactions is not correctly matched ?

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