Complete the following:
a.
b.
c.
d.
e.
f.
g.
h. `PhCHO + Cl_(2) overset("No catalyst")rarr(A)`
i.
j. `PhCHO+(C_(2)H_(5)CO)_(2)O overset(C_(2)H_(5)COONa)rarr A`
k.
l.
m.
n.
o.
p.
q.
r.
s. `PhCOCH_(3)+SeO_(2)rarr (A)`
t. `PhCH=CH-overset(O)overset(||)C-Ph+KCN overset(CH_(3)COOH)rarr (A)`
u. `Ph-underset(CN)underset(|)CH-overset(O)overset(||)C-CH_(3) overset((i)H_(3)O^(o+))underset((ii)Delta)rarr (A)`
v.
w. `Ph-overset(OH)overset(|)underset(Ph)underset(|)C-CH_(2)NH_(2) overset(HNO_(2))rarr (A) overset("Oxidation")rarr (B)`
x. `PhCOPh+KOH rarr (A)+(B)`
y.
z.

Explanation

a.
b.
c.
d. It involves 1,4-addition followed by tautomerisation.

e.
f.
g.
h. `A implies PhCOCI`
i.
j. Perkin reaction:

k.
l. Reimer-Tiemann reaction:
m.
n.
o.
p.
`(B) rArr underset(("Pinacol) (Benzopinacol"))(Ph-underset(OH)underset(|)overset(Ph)overset(|)(C)-underset(OH)underset(|)overset(Ph)overset(|)(C)-Ph)`
q. Cross Cannizzaro reaction:

(B) `implies HCOOK`
r. Fridel-Crafts reaction: Acetylation `(ZnCI_(2)+HCI)` (Lewis acid).

s. `SeO_(2)` oxidises active methylene group to carbonyl group.
`[(A) implies PhCOCHO)]`
t. `CH_(3)COOH+KCN rarr HCN+CN_(3)COOK`. The nucleophilic 1,4-addition takes place.

u.
v. Fries migration of isopropyl group:

w.
x. (A) `implies PhCOOK, (B) implies`
y.
z. Intermolecular Cannizzaro reaction: