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

How will you convert ethanal into the following compound? But-2-enoic acid

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प्रश्न

How will you convert ethanal into the following compound?

But-2-enoic acid

रासायनिक समीकरण/संरचनाएँ
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उत्तर

\[\ce{\underset{Ethanal}{2CH3CHO}->[dil.NaOH][Aldol condensation ]\underset{but-2-enal}{CH3CH = CHCHO}->[Ag(NH3)^+2OH-][Tollens' reagent]\underset{But-2-enoic acid}{CH3CH = CHCO2H}}\]

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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 8.8 (iii) | पृष्ठ २५६

संबंधित प्रश्न

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Give a simple chemical test to distinguish between the following pair of compounds:

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An organic compound contains 69.77% carbon, 11.63% hydrogen and rest oxygen. The molecular mass of the compound is 86. It does not reduce Tollens’ reagent but forms an addition compound with sodium hydrogensulphite and give positive iodoform test. On vigorous oxidation it gives ethanoic and propanoic acid. Write the possible structure of the compound.


\[C_6 H_5 - OH \to^{{Br}_2 \left( aq \right)} ?\]

Which of the following compounds will give butanone on oxidation with alkaline \[\ce{KMnO4}\] solution?


Which of the following compounds gives a positive Tollen's test but negative Fehling's test?


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  1. Identify (A), (B) and (C).
  2. Write the reaction of B with Tollen’s reagent.
  3. Write the equation for iodoform test for C.
  4. Write down the equation for aldol condensation reaction of B and C.

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The major products formed in the following reaction sequence A and B are:


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Match List-I with List-II:

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(Reaction)
  List-II
(Reagents/Condition)
A. I.
B. II. CrO3
C. III. KMnO4/KOH, Δ
D. IV. (i) O3 (ii) Zn-H2O

Choose the correct answer from the options given below:


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