Abstract

A simple and efficient synthetic protocol is developed for the preparation of heterodentate azomethine ligands bearing var- ious functionalities, by Schiff condensation of dialdehydes with monoprotected diamine followed by reduction of the azomethine bond and deprotection. The efficient procedure of obtaining N-tert- butoxycarbonyl-protected o-phenylenediamine in large scale is also elaborated.

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