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Which of the following catalysts or chem...

Which of the following catalysts or chemical reagents are emplyted for the syn addition of hydrogen to alkynes?
(i) Lindlar's catalyst
(ii) P-2 catalyst
(iii) `B_2H_6`
(iv) `DIBAL-H`

A

(i),(ii)

B

(i),(ii),(iii),(iv)

C

(i),(iii),(iv)

D

(i),(ii),(iii)

Text Solution

Verified by Experts

The correct Answer is:
B
Hydrogenation of alkynes in the presence of P-2 catalyst and lindlar's catalyst, and reduction by `B_2H_6` and DIBAL-H causes the syn addition of hydrogen to
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Knowledge Check

  • Which of the following catalyst is used in the polymerisation of CH-=CH to C_6H_6

    A
    `AlCl_3`
    B
    `HgSO_4`
    C
    `NbCl_3`
    D
    `HCl`

  • Which one of the following alkenes will react faster with H_(2) under catalyst hydrogenation condtion?

    A
    B
    C
    D

  • The reduction of 3-hexyne with H_(2) /Lindlar’s catalyst gives predominantly -

    A
    n-Hexane
    B
    Trans-3-hexene
    C
    Cis-3-hexene
    D
    A mixture of cis-and trans-3-hexene

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