On July 13, 2020, Smith, Jacob A.; Simpson, Spenser R.; Westendorff, Karl S.; Weatherford-Pratt, Justin; Myers, Jeffery T.; Wilde, Justin H.; Dickie, Diane A.; Harman, W. Dean published an article.Recommanded Product: 707-07-3 The title of the article was η2 Coordination of Electron-Deficient Arenes with Group 6 Dearomatization Agents. And the article contained the following:
The exceptionally π-basic metal fragments {MoTp(NO)(DMAP)} and {WTp(NO)(PMe3)} (Tp = tris(pyrazolyl)borate; DMAP = 4-(N,N-dimethylamino)pyridine) form thermally stable η2-coordinated complexes with a variety of electron-deficient arenes. The tolerance of substituted arenes with F-containing electron withdrawing groups (EWG; -F, -CF3, -SF5) was examined for both the Mo and W systems. When the EWG contains a π bond (nitriles, aldehydes, ketones, ester), η2 coordination occurs predominantly on the nonaromatic functional group. However, complexation of the W complex with tri-Me orthobenzoate (PhC(OMe)3) followed by hydrolysis allows access to an η2-coordinated arene with an ester substituent. In general, the W system tolerates S-based withdrawing groups well (e.g., PhSO2Ph, MeSO2Ph), and the integration of multiple electron-withdrawing groups on a benzene ring further enhances the π-back-bonding interaction between the metal and aromatic ligand. While the Mo system did not form stable η2-arene complexes with the sulfones or ortho esters, it was capable of forming rare examples of stable η2-coordinated arene complexes with a range of fluorinated benzenes (e.g., fluorobenzene, difluorobenzenes). In contrast to what was observed for the W system, these complexes formed without interference of C-H or C-F insertion. The experimental process involved the reaction of (Trimethoxymethyl)benzene(cas: 707-07-3).Recommanded Product: 707-07-3
The Article related to benzenoid aromatic compound molybdenum tungsten pyrazolylborate complex preparation electrochem, crystal structure benzenoid aromatic compound molybdenum tungsten pyrazolylborate complex, mol structure benzenoid aromatic compound molybdenum tungsten pyrazolylborate complex, bond dissociation energy benzenoid aromatic compound molybdenum tungsten pyrazolylborate and other aspects.Recommanded Product: 707-07-3
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