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Which of the following methods is/are co...

Which of the following methods is/are correct for the synthesis of benzaldehyde?

A

a.`PhCOCl overset(H_(2)+Pd+BaSO_(4))(rarr)`

B

b.`PhCOClunderset(LiAlH(OCMe_(3))_(3))(rarr)`

C

c.

D

d.`PhCH_(2)Ohunderset("Collins reagent")(rarr)`

Text Solution

Verified by Experts

The correct Answer is:
A, B, C, D
All the reactions are correct.
a. Lindlar's catalyst converts (Ph-overset(O)overset(||)(C )-Cl) group to (PhCHO).
b. Lithium aluminum`t`-butoxide also converts `(PhCOCl)`group to`(PhCHO)`
(c )`DIBAL-H`converts`PhC-=N`to PhCHO.
`PCC`or or collins reagent convert `1^(@)`alchol to aldehyde ,i.i,.`PhCH_(2)OH`to`PhCHO`
so, the answer are `(a),(b),(c),and(d)`
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CENGAGE CHEMISTRY-REDUCTION AND OXIDATION REACTION OF ORGANIC COMPOUNDS-Exercise (Multiple Correct)
  1. Which of the following reactions is//are correct?

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  2. Which statement(s) is/are wrong?

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  3. Which of the following reaction(s) is/are correct?

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  4. Which of the following reaction(s) is/are wrong?

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  5. Which of the following reactions is/are wrong?

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  6. Which of the following unbalanced reactions is/are correct?

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  7. Which of the following methods is/are correct for the synthesis of ben...

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  8. Which of the following reaction is/are correct?

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  9. Which of the following methods is/are correct for the synthesis of

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  10. Which of the following on oxidation with alkaline KMnO(4) follwed by a...

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  11. Which of the following methods can be used to prepare propanoic acid?

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  12. Which of the following statements is/are correct about formic acid?

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  13. Which of the following can reduce Benedict's solution?

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  14. Benzoic acid and carbolic acid can be distiguished by:

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  15. Which of the following compounds do(es) not give haloform reaction?

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  16. Which of the following compounds do(es) not react with H(2)+Pd+C?

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  17. Which of the following compounds reacts with NaCNBH(3)?

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  18. Acetonitrile (Meoverset(o+)(N)-=overset(ɵ)(C )) on reaction with Cl(2)...

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  19. Alkyl isocyanides (Roverset(o+)(N)-=overset(ɵ)(C )) are reduced to 2^(...

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  20. Methanamide is reduced to methanamine with:

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