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प्रश्न
Explain why Grignard reagents should be prepared under anhydrous conditions?
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उत्तर
Grignard reagents are very reactive. In the presence of moisture, they react to give alkanes.
\[\ce{\underset{reagent}{\underset{Grigrard}{\overset{\delta-}{R} \overset{\delta +}{M}g \overset{\delta -}{X}}} + H2O -> \underset{Alkane}{R - H} + Mg (OH) X}\]
Therefore, Grignard reagents should be prepared under anhydrous conditions.
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संबंधित प्रश्न
Identify A, B, C, D, E, R and R1 in the following:
How will you bring about the following conversion?
1-Chlorobutane to n-octane
How the following conversion can be carried out?
2-Chlorobutane to 3, 4-dimethylhexane
How the following conversion can be carried out?
Chloroethane to butane
A Grignard reagent may be made by reacting magnesium with ____________.
Which one of the following produces acyl halide by treatment with PCl5?
Which of the following statements are correct about the reaction intermediate?
(i) Intermediate (c) is unstable because in this carbon is attached to 5 atoms.
(ii) Intermediate (c) is unstable because carbon atom is sp2 hybridised.
(iii) Intermediate (c) is stable because carbon atom is sp2 hybridised.
(iv) Intermediate (c) is less stable than the reactant (b).
Draw other resonance structures related to the following structure and find out whether the functional group present in the molecule is ortho, para directing or meta directing.
Why is it necessary to avoid even traces of moisture during the use of a Grignard reagent?
Which of the statements about Grignard reagent is false?
A product (1) of above reaction is:-
Grignard reagent shows addition on
The product formed in the first step of the reaction
\[\begin{array}{cc}
\ce{Br}\phantom{......}\\
|\phantom{.......}\\
\ce{CH3-CH2-CH-CH2-CH-CH3}\\
\phantom{...............}|\\
\phantom{................}\ce{Br}
\end{array}\]
with excess Mg/Et2O(Et = C2H5) is:
Explain why Grignard reagents should be prepared under anhydrous conditions?
Explain why Grignard reagents should be prepared under anhydrous conditions?
Explain why Grignard reagents should be prepared under anhydrous conditions?
Explain why Grignard reagents should be prepared under anhydrous conditions?
Explain why Grignard reagents should be prepared under anhydrous conditions?
