A polyamine dendritic polymer-copper complex: a reusable catalyst for the additive-free amination of aryl bromides, and iodides

A porphyrin-initiated amine-functionalized polyepichlorohydrin dendritic polymer ( PPECH-Amine ) was effectively synthesized, and its water-soluble copper complex ( PPECH-Amine-Cu ) was developed by treating it with copper acetate. PPECH-Amine and PPECH-Amine-Cu were characterised by different spectroscopic and microscopic techniques. PPECH-Amine-Cu was identified as a reusable catalyst for the amination of bromo- and iodo-benzene derivatives in aqueous media. Due to the presence of residual amino groups in the PPECH-Amine-Cu catalyst, the protocol does not need any additional base additive, as ammonia itself acts as a base and a coupling partner. Due to the good water-soluble nature of this catalyst, it can be easily separated and reused up to six reaction cycles without any loss in its activity. Additive-free synthesis of aryl amines from aryl halides using a reusable water-soluble porphyrin-cored amine-functionalized dendritic polymer copper complex ( PPECH-Amine-Cu ) catalyst in aqueous media.