Non-Pincer-Type Arene Ru(II) Catalysts for the Direct Synthesis of Azines from Alcohols and Hydrazine under Aerobic Conditions

We report a tandem approach to synthesize symmetrical azines from alcohols and hydrazine hydrate catalyzed by synthesized arene Ru­(II) complexes of aroylthiourea ligand. Notably, the catalytic efficiencies of six- and four-membered N,S-chelate ruthenium complexes were evaluated. The catalytic react...

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Bibliographic Details
Published in:Organometallics 2020-09, Vol.39 (17), p.3194-3201
Main Authors: Saranya, Sundar, Ramesh, Rengan, Sémeril, David
Format: Article
Language:English
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Summary:We report a tandem approach to synthesize symmetrical azines from alcohols and hydrazine hydrate catalyzed by synthesized arene Ru­(II) complexes of aroylthiourea ligand. Notably, the catalytic efficiencies of six- and four-membered N,S-chelate ruthenium complexes were evaluated. The catalytic reaction exhibits complete selectivity for symmetrical azines. A diverse range of azines was synthesized in good to high yields using a catalyst loading of 0.5 mol %, in marked contrast to the previous reports. Remarkably, the catalytic reaction operates under aerobic and mild reaction conditions with the release of water as the only byproduct.
ISSN:0276-7333
1520-6041
DOI:10.1021/acs.organomet.0c00367