Select the correct combination :

Options

A. `H_3 C- overset(O) overset(||)C-H underset(Delta) overset(overset(Ө)OH)to H_2 C - CH =CH - overset(O ) overset(||)C -H`
B. `Ph- overset(O ) overset( ||)C -H overset(KOH) to Ph - overset(O ) overset(||)C - overset(Ө)OK^(o+) +Ph -CH_2 -OH`
C. `Ph - overset(O) overset(||) C-H overset(AI(OET)_2) to Ph - overset(O ) overset(||)C -O- CH_2 -Ph`
D. `H- overset(O ) overset(||)C-H overset(NaOH) to H- overset(O ) overset(||)C - OH +CH_2 -Ph`

Answer

A, B, C

Explanation

Correct combiantion
` (a) CH_3 - overset(O ) overset(|| )C -H underset(Delta) overset(overset(Ө)OH) to H_3 C -CH =CH- overset(O) overset(||)C -H` (Aldol condensation )
`(b ) Ph- overset(O ) overset(||) C-H overset(KOH ) to Ph - overset(O ) overset(||)C -OK +ph -CH_2 -OH ` ( Cannizaros reaction )
`(c ) Ph - overset(O ) overset(||)C- H overset(Al (OEt)_5) to Ph - overset(O ) overset(|| )C - O- CH_2 -Ph ` ( modified cannizaros reaction or fischinko rection)`