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A new tripod boron dipyrromethene (BODIPY) dye bearing  N - tert -butoxycarbonyl ( N -Boc) amine side chain was synthesized and the functionality was confirmed by means of its acetylation reaction with acetic anhydride. Deprotection of the  N -Boc protective group had been successfully performed using boron trifluoride etherate (BF 3 ·OEt 2 ) solution alone or the combination of BF 3 ·OEt 2  and molecular sieves to solve the susceptibility of the BODIPY fluorophore under the protonic acid conditions. All the new structures had been characterized by NMR, HRMS and IR spectra. A conformational isomeric phenomenon was observed originating from partly restricted rotation of the RNH group attached to the 1,3,5-triazine ring. This work made the chemical transformation via amine functionality around  meso  position in the tripod BODIPY available.

Synthesis of a new tripod BODIPY dye bearing N - tert -Butoxycarbonyl amine and its acetylation