Which acts as poison for Pd-charcoal in Lindlar cataluyst ?

Options

A. ` BaSO_4`
B. quinoline
C. Both a and b
D. none of these

Answer

C

Explanation

Either ` BaSO_4` or quinoline are used to reduce the acitvity of ` Pd-`charcoal . The catlyst Pd-charcoal /`BaSO_4` or quinoline is used to hydrogenate aljyne to hydrogenate alkyne to alkene only .
`CH=CH +H_(2) overset("Lindlar catalyst")rarr CH_(2) = CH_(2)`