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For carbonation of Grignard reagent, whi...

For carbonation of Grignard reagent, which of the following is used ?

A

Solid `CO_(2)`

B

alkyl group

C

Ice

D

Both (a) and (c )

Text Solution

Verified by Experts

The correct Answer is:
A
`RMgC+overset(O)overset(||)(C)=Ounderset(H^(+))overset(H-OH)(rarr)R-overset(O)overset(||)(C)-OH`
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Grignard reagent is usually prepared by R-X+Mg overset(Et_(2)O)rarrRMgX " " "Grignard reagent" Ar-X+Mg overset(Et_(2)O)rarrArMgX " " "Grignard reagent" Grignard reagent acts s a strong base. Grignard reagent carry out nucleoplilic attack in absence of acidic hydrogen. Grignard reagent form complex with its ether solvent. Complex formation with molecule of ether is an important factor in the formation and stability of Grignard reagent. Which of the following will undergo acid-base reaction with Grignard reagent ?

Grignard reagent is usually prepared by R-X+Mg overset(Et_(2)O)rarrRMgX " " "Grignard reagent" Ar-X+Mg overset(Et_(2)O)rarrArMgX " " "Grignard reagent" Grignard reagent acts s a strong base. Grignard reagent carry out nucleoplilic attack in absence of acidic hydrogen. Grignard reagent form complex with its ether solvent. Complex formation with molecule of ether is an important factor in the formation and stability of Grignard reagent. Which of the following Grignard reagents is not possible ?

Reaction With Grignard Reagent

Grignard reagent adds to :

Grignard reagent is usually prepared by R-X+Mg overset(Et_(2)O)rarrRMgX " " "Grignard reagent" Ar-X+Mg overset(Et_(2)O)rarrArMgX " " "Grignard reagent" Grignard reagent acts s a strong base. Grignard reagent carry out nucleoplilic attack in absence of acidic hydrogen. Grignard reagent form complex with its ether solvent. Complex formation with molecule of ether is an important factor in the formation and stability of Grignard reagent. Which of the following reactants give primary alcohol as a major product when reacts with RMgX followed by acidification?

Grignard reagent give alkane with:

MARVEL PUBLICATION-ALDEHYDES,KETONES AND CARBOXYLIC ACIDS-CARBOXYLIC ACIDS
  1. Sodium acetate and acetyl chloride react to give:

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  2. Which of the following orders is true regarding the acidic nature

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  3. For carbonation of Grignard reagent, which of the following is used ?

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  4. Vinegar , a food preservative is :

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  5. Alkyl cyanides on hydrolysis with mineral acids form :

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  6. When dry ice reacts with CH(3)MgBr the product is hydrolysed to give :

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  7. Hydrolysis of ethyl cyanide gives :

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  8. Which of the following ismore acidic in nature ?

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  9. Ethanoic acid is obtained from which of the following :

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  10. The strongest acid among the following :

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  11. A overset(KCN)(rarr)CH(3)CN underset(Boil ) overset("Alkali")(rarr) B,...

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  12. Consider the following sequence of reactions and identify the final pr...

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  13. What is the main reason for the fact that carboxylic acids can undergo...

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  14. With the increase in molecular weight,the acidic character of fatty ac...

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  15. The pKa values of stronger acids are :

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  16. 2-methyl propan nitrile on alkaline hydrolysis give :

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  17. Identify 'Product ' in the reaction : CH(3)COOH+NH(3) rarr "Intermed...

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  18. Which product distills over when a mixture of absolute alcohol and gla...

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  19. Which of the following carboxylic acid can be esterified most readily ...

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  20. The reaction between an alcohol and carboxylic acid is known as :

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