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How 3-hexyne can be prepared form acetyl...

How 3-hexyne can be prepared form acetylene?

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Acetylene is treated with sodium metal to get disodium acetylide which on treatment with ethylbromide, 3-hyxyne is formed
`HC-=CH+2NatoNaC-=Cnaoverset(2C_(2)H_(5)Br)toCH_(3)CH_(2)C-=C CH_(2)CH_(3)+2NaBr`
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NARAYNA-ALKYNES-Level-6
  1. How 3-hexyne can be prepared form acetylene?

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  2. Complete the following reaction

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  3. The Reactant A is

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  4. Which reagent will be used for the above conversion?

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  5. H(2)C=CH-C=CH+HCIrarrX,X'is:

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  6. Which would produce chiral molecule after treatment with Lindlar catal...

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  7. How is the following transformation best carried out? .

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  8. 3CH(3)-C=Choverset(Red hot)underset(Cu tube)rarr

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  9. CH(3)CH(2)C=Choverset(NaNH(2)//NH(3)(l))rarr overset(CH(3)CH(2)Br)rarr...

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  10. CH(3)CH(2)CH(2)-overset(O)overset(||)(C)-H+CH(3)-C-=CH overset(Na,NH(3...

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  11. The Products of the following I and II sequences are related as:

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  12. Complete the following reaction

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  13. HC=Choverset(KNH(2))underst(CI-(CH(2))(8)-CI)rarrAoverst(H(2))underst(...

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  14. Which is the most suitable reagent among the following distinguish com...

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  15. Two gases P and Q both decolourise aquieous bromine buyt only one of ...

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  16. Which of the following hydrocarbons should be choosen as a starting ma...

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  17. End product B is :

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  18. P and Q are respectively:

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  19. CH(3)C=CH(3)overset(BH(3).THF)underset(CH(3)COOH)rarrMajor porduct:

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  20. Which alkyne will give 3-ethylhexane on catalytic hydrogenation?

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  21. Which reaction yields the major product shown?

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