Dear friend,

for the coupling reactions as e.g. hydrazone synthesis from carbonyl compounds that may be an advantage, do not need to add additional acid catalyst.

Das,

You may use Xhydrazine. HCl and 1.1 eq. NaAc

Good luck

Can we not work up the hydrazine hydrochloride with base and then use it?

Deb,confide, in what type of response you want to use the mesitylhydrazine and we will give you perfect advice.

I can not use mesitylhydrazine as salt for my reaction as it is insoluble in DCM which is my reaction medium.

Thank you very much Daniel....I have used satd. NaHCO3 and DCM for the extraction as you have mentioned. It also worked well.