Nandi, Pran Gobinda; Kumar, Pradhuman; Kumar, Akshai published the artcile< Ligand-free Guerbet-type reactions in air catalyzed by in situ formed complexes of base metal salt cobaltous chloride>, Related Products of 403-41-8, the main research area is phenyl ethanol benzyl alc Guerbet type reaction green chem; cobaltous chloride complex catalyst.
Inexpensive, earth-abundant and environmentally benign cobaltous chloride efficiently accomplishes the catalytic β-alkylation of alcs. in air at 140°. At higher loadings of cobaltous chloride (1 mol%) in the presence of 2.5 mol% NaOtBu, there is a rapid formation of heterogeneous Co nanoparticles (NPs) which are apparently sensitive to air and result in poor yields (ca. 25%) of β-alkylated products. In contrast, performing the reaction in an argon atm. under otherwise identical conditions leads to higher yields (ca. 44%). The heterogenization and eventual loss of activity in air could be delayed by operating at a lower (0.01 mol%) CoCl2 loading in the presence of 2.5 mol% NaOtBu at 140°. Under these conditions, the catalytic β-alkylation of alcs. proceeded with high yields (up to 89%) and unprecedented turnovers (ca. 8900). Mechanistic studies are indicative of the involvement of catalysts based on in situ generated mol. Co complexes of alcs. Labeling studies provide key evidence for the involvement of C-H activation in the cobaltous chloride catalyzed β-alkylation with a KIE of 1.61. Kinetic studies indicate linear dependence of the rate on the concentration of cobaltous chloride and sodium t-butoxide along with a non-linear dependence on the concentration of 1-Ph ethanol and benzyl alc.
Catalysis Science & Technology published new progress about Alkylation. 403-41-8 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H9FO, Related Products of 403-41-8.
Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts