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Why is it necessary to avoid even traces...

Why is it necessary to avoid even traces of moisture during the use of a Grignard reagent?

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### Step-by-Step Solution 1. **Understanding Grignard Reagents**: - A Grignard reagent is typically represented as R-Mg-X, where R is an alkyl or aryl group, Mg is magnesium, and X is a halogen (like Cl, Br, or I). - These reagents are known for their high reactivity, particularly with electrophiles. 2. **Reactivity with Water**: - Grignard reagents are highly reactive towards moisture (water). Even traces of water can lead to a reaction. ...
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Amides undergo hydrolysis to yield carboxylic acid plus amine on heating in either aqueous acid or aqueous base. The conditions required for amide hydrolysis are more severe than those required for the hydrolysis of esters, anhydrides or acid chlorides, but the mechanism is similar (nucleophilic acyl substitution). Nucleophilic acyl substitutions involve a tetrahedral intermediate, hence these are quite different from alkyl substitution (RCH_(2)Broverset(NaCN)to RCH_(2)CN) which involves a pentavalent intermediate or transition state. One of the important reactions of esters is their reaction with two equivalent of Grignard reagent to give tertiary alcohols. The mechanism involved during the hydrolysis of acid derivatives is:

Amides undergo hydrolysis to yield carboxylic acid plus amine on heating in either aqueous acid or aqueous base. The conditions required for amide hydrolysis are more severe than those required for the hydrolysis of esters, anhydrides or acid chlorides, but the mechanism is similar (nucleophilic acyl substitution). Nucleophilic acyl substitutions involve a tetrahedral intermediate, hence these are quite different from alkyl substitution (RCH_(2)Broverset(NaCN)to RCH_(2)CN) which involves a pentavalent intermediate or transition state. One of the important reactions of esters is their reaction with two equivalent of Grignard reagent to give tertiary alcohols. Which of the following constitutes the best substrate during the acidic hydrolysis of amides?

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NCERT EXEMPLAR ENGLISH-HALOALKANES AND HALOARENES-Short Answer Type Questions
  1. Write down the structure and IUPAC name for neo-pentylbromide.

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  2. A hydrocarbon of molecular mass 72 g mol^(-1) gives a single monochlor...

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  3. Name of the alkene which will yield 1-chloro-1-methylcyclohexane by it...

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  4. Which of the following haloalkanes reacts with aqueous KOH most easily...

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  5. Why can aryl halides not be prepared by reaction of phenol with HCl in...

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  6. Which of the following compounds would undergo S(N)1 reaction faster a...

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  7. Allyl chloride is hydrolysed more readily than n-propyl chloride. Why ...

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  8. Why is it necessary to avoid even traces of moisture during the use of...

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  9. How do polar solvents help in the first step in S(N)1 mechanism?

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  10. Write a test to detect the presence of double bond in a molecule.

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  11. Diphenyls are potential threat to the envioronment. How are these prod...

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  12. What are the IUPAC names of the insecticide DDT and benzene hexachlori...

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  13. Elimination reaction (especially beta - elimination) are as common as ...

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  14. How will you obtain monobromobenzene from aniline ?

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  15. Aryl halides are extermely less reactive towards nucleophilic substitu...

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  16. tert-Butylbromide reacts with aq. NaOH by S(N)1 mechanism while n-buty...

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  17. Predict the major product formed when HCl is added to isobutylene, Exp...

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  18. Discuss the nature of C-X bond in the haloarenes.

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  19. How can you obtain iodoethane from ethanol when no other iodine contai...

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  20. Cyanide ion acts as an ambident nucleophille. From which end it acts a...

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