This will react with aldehyde to form hydrazone derivatives
It requires a primary amine right?
This is secondary
The last nitrogen is in ionized form why can't it lose the hydrogen to give tertiary amine
Do all ammonia derivative add to aldehyde or only some of them ( jo hame padaya jata hai like hydrazine , phenyl hydrazine hydroxy amine , dnp ) ????
S says hydrazone derivative. B and C are not hydrazones
You need 2 H on the N atom for this else you get an enamine
In D there is only one H