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Aerobic Oxidation of Alcohols and the Synthesis of Benzoxazoles Catalyzed by a Cuprocupric Coordination Polymer (Cu+‑CP) Assisted by TEMPO

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posted on 2015-03-02, 00:00 authored by Xun Feng, Chen Xu, Zhi-Qiang Wang, Si-Fu Tang, Wei-Jun Fu, Bao-Ming Ji, Li-Ya Wang
A Cu+-CP based on the tetranuclear unit {[(HSQPA)2Cu4(bipy)4]·2H2O}n·2nH2O has been constructed through Cu2+ salt, 2-(sulfonylquinlium-8-yloxy)­phthalic acid (H3SQPA), and 4,4′-bipyridine (bipy). This Cu+-CP combined with 2,2,6,6-tetramethylpiperidine-1-oxyl as the cocatalyst is an effective catalyst for aerobic oxidation of alcohols and the synthesis of benzoxazoles and can be recycled at least four times without losing its catalytic activity.

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