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underset((I))(HCHO): underset((II))(CH3C...

`underset((I))(HCHO): underset((II))(CH_3CHO):underset((III ))(C CI_3 CHO ), underset((IV ))(CH_3 COCH_3) : underset((V ))(C CI_3 COCH_3) , underset((VI))(C_6H_5 CHO)`
Which of the above compounds undergo aldol condensation

A

Only II, III, IV and VI

B

Only II, IV, and V

C

Only II and III

D

All except I

Text Solution

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The correct Answer is:
B
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Arrange the following compounds in decreasing order of nucleophilic addition reaction underset((I))(CH_3 - overset(O ) overset(||)C -CH_3) underset((II))(CH_3 - overset(O)overset(||)C-CI) underset((III))(CH_3 - overset(O ) overset(|| ) C-NH_2) underset((IV ))(CH_3 - overset(O ) overset(||)C -OH) underset((V ))(CH_3 - overset(O ) overset(||)C- O- overset(O ) overset(||)C -CH_3)

IUPAC name of CH_(3)-underset(C_(2)H_(5))underset("| ")("C ")H-CH_(2)-underset(C_(2)H_(5))underset("| ")("C ")H-CH_(3)

(I) CH_3 OH (II) C_2H_5OH (III) CH_3CH_2CH_2OH (IV) CH_3 -CH (OH)CH_3 (V) (CH_3)_3 C- OH (VI) CH_3 CH(OH)C_2H_5 (VII) CH_3COCH_3 (VIII) C C l_3 COCH_3 (IX) CH_3 CHO (X) CH_3 -overset( O) overset(||) C - OH (XI) CH_3 -overset( O) overset(||) C- O -C_2H_5 (XII) C_2 H_5-CHO Which of the above compounds cannot undergo iodoform reaction ?

IUPAC name of CH_(3)-underset(CH_(2))underset("|| ")("C ")-CH_(2)-underset(CH_(2))underset("|| ")("C ")-CH_(3)

Which alkyl halide from the following pairs would you expect to react more rapidly by an S_N2 mechanism ? Explain your answer. (i) underset((A))(CH_3CH_2Br) " or " underset((B))underset(Br)underset(|)(CH_3CH_2CHCH_3) (ii) underset((C))underset(Br)underset(|)(CH_3CH_2CHCH_3) " or " underset((D))underset(CH_3)underset(|)(H_3C-C-Br) (iii) underset((E))underset(CH_(3))underset(|)(CH_3CHCH_2CH_2Br) " or " underset((F))underset(CH_3)underset(|)(CH_3CH_2CHCH_2Br)

Name the following compounds according to IUPAC system. (i) CH_(3) - CH_(2) - underset (CH_(2)Cl) underset(|)(CH) - overset (CH_(2)OH) overset(|) (CH) - underset (CH_(3)) underset (|) (CH) - CH_(3) CH_(3)- underset (CH_(3)) underset(|) (CH) -CH_(2) - underset(OH) underset(|) (CH) - overset (CH_(2)OH) overset(|) (CH) - CH_(2) (iii) (iv) H_(2)C = CH - underset (OH)underset (|) (CH) - CH_(2) - CH_(2) - CH_(3) (v) CH_(3) - underset (CH_(3)) underset ( |) C = underset (Br)underset(|) C - CH_(2)OH

AAKASH SERIES-ALDEHYDES AND KETONES-objective Exercise -2A
  1. Cyanohydrin of which compound on hydrolysis will give lactic acid?

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  2. Consider the following statements A) On reaction with Grignard reagen...

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  3. underset((I))(HCHO): underset((II))(CH3CHO):underset((III ))(C CI3 CHO...

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  4. The correct match is

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  5. Identify Z in the followig reaction 2H(3)C COCH(3) underset((ii) Delta...

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  6. During reduction of aldehyde with(H2N-NH2)/(OH // "glycol") the first ...

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  7. Schiff's bases are formed when aniline reacts with

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  8. Which of the following can undergo neither aldol condensation nor iodo...

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  9. Diacetone alcohol is obtained when

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  10. Which one of the following is one of the cross end products formed whe...

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  11. Number of sigma bonds ,pi bonds and lone pairs of electrons present i...

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  12. When acetaldehyde undergoes reaction with Zn-HCl in the presence of Hg...

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  13. HCHO with conc. Alkali forms two compounds. The change in oxidation nu...

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  14. Which does not react with Fehling's solution ?

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  15. A compound reduces Tollen's reagent but does not reduce Fehling's or B...

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  16. 1-Phenylethanol can be prepared by reaction of benzaldehyde with

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  17. Which of the following compound will give yellow precipitate with I(2)...

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  18. C(3)H(8)O underset(K(2)Cr(2)O(7)//H^(+))overset((O))rarr C(3)H(6)O ove...

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  19. Which among the following gives positive iodoform test as well as posi...

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  20. Which of the following compound will not undergo Cannizzaro reaction ?

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