Process for diastereoselective synthesis of vicinal diamines

A process for the preparation of diastereoselective synthesis of vicinal diamines of compound of formula (1),

• the process comprising:
• (a) reacting a compound of formula (2) or a compound of formula (3) with a base in an organic solvent to produce 2-azaallyl anion of formula (4), which is optionally isolated;
• and
• (b) condensing 2-azaallyl anion of formula (4) with a compound of formula (5) in a solvent to produce vicinal diamines of formula (1),
• wherein, R and R1 is independently selected from H, C1-C10 linear or branched or cyclic alkyl, substituted or unsubstituted aryl, ester, ether, hetero aryl, halo, haloalkyl.