Ary-Branched, Amide Connectivity

341 reported two related types of hyperbranched aromatic polyamides each employed amide bond formation for building block connectivity and was based on three- 

The solid-phase preparation of hyperbranched dendritic polyamides, based on 3,5-di-aminobenzoic acid, was attempted but deemed to have severe limitations , such as the critical condensation reaction could not be forced to completion. The accessibility of chain ends within the solid support was suggested1381 to be the major obstacle to high yield conversion. 

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