Which sequence of reaction produce...

Which sequence of reaction produce

A

`CH_3-C -= C CH_3 underset("Lindlar's catalyst")overset(D_2)to`

B

`CH_3C -= C CH_3 underset((2) CH_3COOD) overset((1) BD_3)to`

C

`CH_3C -= C CH_3 underset((2) CH_3COOH)overset((1) BD_3,THF)to`

D

`CH_3C -= CCH_3 underset((2)CH_3COOD)overset((1)BH_3, THF)to`

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The correct Answer is:

A, B

Alkynes on deuteration / hydrogentaion in the presecne of Lindlar.s catalyst, `BD_3`, Nickelboride, undergoes synaddition and gives Cis Alkene.

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