Wurtz reaction is a coupling reaction where two alkyl halides are reacted with sodium metal in dry ether to give higher alkane. 2R−Br
Na
→
R−R+2‌NaBr In decarboxylation, a carboxyl group is removed and CO2 is released. R2COO−Na+
NaOH
───▶
CaOrΔ
R−H Lindlar's catalyst has 3 components i.e. palladium-calcium carbonate. lead acetate and quinoline. Quinoline prevents complete hydrogenation of alkynes to alkane resulting in partial reduction. R−C≣C−R′
Lindlar′s
─────▶
calalyst‌(H2)
R−
C
|
H
=
C
|
H
−R Electrophilic addition reaction occurs between electrophile and a nucleophile, adding to double or triple bond. CH2=CH2
Br2
───▶
CCl4
‌Br−CH2−CH2‌Br So, correct match is (A−3),(B−4),(C−1),(D−2)
