23a>b>c>d ...reactivity towards catalytic hydrogenation ....i.e a reacts fastest
more stable the pi bond , less is its reactivity towards catayltic hydrogenation
Q→ which of the following will react fastest with H2 under catalytic hydrogenation conditions ?
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5 Answers
23
1Hydrogenation of alkene is governed by the fact stearic hinderance. Smaller the alkyl-R group lesser will be the stearic hinderance.Thus in option (a) alkyl -R gp on the same side,soit react fast.
1a) will react fastest becoz alkyl group always give +i effect so electron density increases more in case of a) and not in b) c) and d) as the repulsion between electrons increases , R is present both sides...
