Journal
INORGANIC CHEMISTRY
Volume 59, Issue 15, Pages 10384-10388Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.inorgchem.0c01035
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Funding
- Russian Foundation for Basic Research [18-58-00013Bel_a, 20-58-00005-Bel_a]
- Belarusian Republican Foundation for Fundamental Research [X18P-010, X20P017]
- RUDN University Program 5-100
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We report for the first time cyclic phosphine-free head to tail N,N,N pincer-like (pincer complexes mimicking) N-(pyrimidin-2-yl)-1,2-azole-3-carboxamide Pd(II) complexes with deprotonated amide groups as high-turnover catalysts (TON up to 10(6), TOF up to 1.2 x 10(7) h(-1)) for cross-coupling reactions on the background of up to quantitative yields under Green Chemistry conditions. The potency of the described catalyst family representatives was demonstrated in Suzuki-Miyaura, Mizoroki-Heck, and Sonogashira reactions on industrially practical examples. Corresponding ligands could be synthesized based on readily available reagents through simple chemical transformations. Within the complex structures, a highly unusual 1,3,5,7-tetraza-2,6-dipalladocane frame could be observed.
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