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In the reaction H-C-=CH underset((2)CH...

In the reaction
`H-C-=CH underset((2)CH_3CH_2Br)overset((1)NaNH_2//liq.NH_3)toXunderset((2)CH_3CH_2Br)overset((1)NaNH_2//liq.NH_3)toY`
X and Y are

A

X=2-butyne, Y=2-hexyne

B

X=1-butyne, Y=2-hexyne

C

X=1-butyne, Y=3-hexyne

D

X=2-butyne, Y=3-hexyne

Text Solution

Verified by Experts

The correct Answer is:
C
`H-C-=C-H underset(-NH_3)overset(NaNH_3//liq. NH_3) to H-C-=C^(-)Na^+ underset(-NaBr)overset(CH_3CH_2Br)to underset"1-Butyne (X)"(H-C-=C-CH_2CH_3) underset(-NH_3)overset(NaNH_2 // liq. NH_3)to Na^+ .^-C-=C-CH_2CH_3 underset(-NaBr)overset(CH_3CH_2Br)to underset"3-Hexyne"(CH_3CH_2-C-=C-CH_2CH_3)`
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PRADEEP-HYDROCARBONS-Competition Focus (JEE(main and advanced)/Medical Entrance) I. MULTIPLE CHOICE QUESTIONS
  1. Identify the reagents in the following transformations :

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  2. The reagents to carry out the following conversion are

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  3. In the reaction H-C-=CH underset((2)CH3CH2Br)overset((1)NaNH2//liq.N...

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  4. The reagent 'X' used for the following reaction is

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  5. The trans-alkenes are formed by the reduction of alkynes with

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  6. 2-Hexyne gives trans -2- hexene on treatment with :

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  7. The isomerism of 2-butyne to 1-butyne can be achieved by treatment wit...

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  8. Identify X in the following sequence of reactions : CH3-undersetunde...

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  9. Catalyst used in dimerisation of acetylene to prepare chloroprene is

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  10. Which of the following reagents will be able to distinguish between 1-...

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  11. Propyne and propene can be distinguished by :

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  12. Ethylene can be separated from acetylene by passing the maxiture throu...

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  13. 1-Butyne reacts with cold alkaline KMnO(4) to produce

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  14. A compound X (C5H8) reacts with ammoniacal AgNO3 to give a white preci...

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  15. CH3-C-=C-CH3 underset((ii)H2O //Zn)overset((i)X)to CH3-undersetunderse...

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  16. CH-=CH overset(O3)to X overset(Zn//CH3OH)to Y, Y is

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  17. Identify a reagent from the following list which can easily distinguis...

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  18. The molecular formula of diphenylmethane , , is C(13)H(12), How m...

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  19. The hydrocarbon which does not decolourise alkaline KMnO4 solution and...

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  20. The correct statement is :

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