Journal
GREEN CHEMISTRY
Volume 20, Issue 8, Pages 1805-1812Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7gc02892j
Keywords
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Funding
- National Natural Science Foundation of China [21401080, 21776111]
- Jiangsu Talents Project [2013-JNHB-027]
- Fundamental Research Funds for the Central Universities [JUSRP 51627B]
- MOE & SAFEA for the 111 Project [B13025]
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Herein, an indazolyl-pyridinyl-triazole ligand was synthesized and its iridium complex supported on hydrotalcite was characterized via X-ray power diffraction (XRD), X-ray photoelectron spectroscopy (XPS), energy dispersive X-ray (EDX) spectroscopy and transmission electron microscopy (TEM). This new heterogeneous catalyst bearing the unsymmetrical indazolyl-pyridinyl-triazole ligand exhibits high catalytic activity in water. Both functionalized amines and imines were obtained from the challenging selective reaction of benzylamines with arylamines through transfer hydrogenation and dehydrogenation under clean conditions. In particular, it was observed that this catalyst system showed good recovery performance in water. Mechanistic studies showed that this transformation occurs via amine dehydrogenation, hydrolysis and condensation processes. The direct capture of the reaction intermediate provides sufficient proof for this process.
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