Jayant Kishore
Last Activity: 8 Years ago
Dear Yogiraj,
H2N-NH-(C=O)-NH2 is semicarbazide.
H2*N-NH-(C=O)-NH2 + HCHO → H2C=*N-NH-(C=O)-NH2
The Product formed is semicarbazone. This reaction is similar to the addition of ammonia derivatives to aldehydes and ketones . MOST IMPORTANT THING IS THAT ADDITION TAKES PLACE FROM NITROGEN ATOM (marked * here) WHOSE LONE PAIR ARE NOT IN RESONANCE WITH C=O IN SEMICARBAZIDE.
