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कर्नाटक बोर्ड पी.यू.सी.पीयूसी विज्ञान 2nd PUC Class 12

How will you bring about the following conversion in not more than two steps? Benzaldehyde to 3-Phenylpropan-1-ol

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प्रश्न

How will you bring about the following conversion in not more than two steps?

Benzaldehyde to 3-Phenylpropan-1-ol

रासायनिक समीकरण/संरचनाएँ
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उत्तर १

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उत्तर २

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अध्याय 8: Aldehydes, Ketones and Carboxylic Acids - Exercises [पृष्ठ २५६]

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एनसीईआरटी Chemistry Part 1 and 2 [English] Class 12
अध्याय 8 Aldehydes, Ketones and Carboxylic Acids
Exercises | Q 8.15 (vii) | पृष्ठ २५६

संबंधित प्रश्न

How will you convert ethanal into the following compound?

Butane-1, 3-diol


Describe the following:

Cross aldol condensation


Write a chemical equation for the following reaction: 
Propanone is treated with dilute Ba( OH)2.


What is substituted imine called?


Explain aldol condensation reaction in detail.


Cannizaro’s reaction is not given by ______.


What product will be formed on reaction of propanal with 2-methylpropanal in the presence of \[\ce{NaOH}\]? What products will be formed? Write the name of the reaction also.


Assertion: Aromatic aldehydes and formaldehyde undergo Cannizaro reaction.

Reason: Aromatic aldehydes are almost as reactive as formaldehyde.


Give reasons to support the answer:

Presence of Alpha hydrogen in aldehydes and ketones is essential for aldol condensation.


\[\ce{CH3-CH2-CHO ->[dil][alkali] Product}\]

The product in the above reaction is:


Explain Aldol condensation of ethanal.


Which of the following does not give aldol condensation reaction?


Which of the following compounds will undergo self-condensation in the presence of dilute NaOH solution?


Identify A and B:


When acetaldehyde is treated with dilute NaOH, the following reaction is observed.

\[\begin{array}{cc}
\ce{2CH3 - CHO ->[dil.NaOH] CH3 - CH - CH2 - CHO}\\
\phantom{...............}|\\
\phantom{.................}\ce{OH}
\end{array}\]

  1. What are the functional groups in the product?
  2. Can another product be formed during the same reaction? (Deduce the answer by doing atomic audit of reactant and product).
  3. Is this an addition reaction or condensation reaction?

What is aldol condensation? Explain it with suitable examples.


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