Reagents

Question 1

DDQ

Answer 1

Cyclohexane,——>cyclohexene

Question 2

Raney nickel

Answer 2

H2 /pd/C

Alkene. Alakane
Alkyne. Alkane
Cyanide. Amine
Aldehyde or ketone alchohol

Question 3

H2 /pd/caco3
Rosenmunds reaction
Liindlaar catylyst
No stero selecting

Answer 3

Alkyne. ——-> cis alkene
Acid chloride ——->aldehyde

Question 4

Clemmenson reduction
Acid catylyesd

Answer 4

Zn Hg/Hcl

Question 5

BH3, B2H6 9 BBN

Answer 5

Elctrophilic hydride donor
Highly chemoselctive to acid and amide