Insight into forced hydrogen re-arrangement and altered reaction pathways in a protocol for CO<sub>2</sub> catalytic processing of oleic acid into C<sub>8</sub>–C<sub>15</sub> alkanes
alkane products. The reaction pathway in the CO2 atmosphere is significantly different from that in the H2 atmosphere, as shown by the presence of 8-heptadecene, γ-stearolactone, and 3-heptadecene as reaction intermediates, as well as a CO formation pathway. Because of the highly dispersed Ni metal center on the zeolite support, H2 spillover is observed in the H2 atmosphere, which inhibits the production
Synthesis and Activity of Six-Membered Cyclic Alkyl Amino Carbene–Ruthenium Olefin Metathesis Catalysts
作者:Adrian E. Samkian、Yan Xu、Scott C. Virgil、Ki-Young Yoon、Robert H. Grubbs
DOI:10.1021/acs.organomet.9b00862
日期:2020.2.24
alkyl amino carbene (Ru–CAAC) olefin metathesiscatalysts perform extraordinarily in metathesis macrocyclization and ethenolysis, but previous studies have been limited to the use of five-membered CAAC (CAAC-5) ligands. In this work, we synthesized a different group of rutheniumcatalysts with more σ-donating and π-accepting six-membered CAAC (CAAC-6) ligands, and their metathesisactivity was probed
disease caused by the intake of trans fattyacids, a method to eliminate trans fattyacids from foods has become a critical issue. Herein, we engineered fattyacid photo-decarboxylase from Chlorella variabilis (CvFAP) to selectively catalyze the decarboxylation of trans fattyacids to yield readily-removed hydrocarbons and carbon dioxide, while cis fattyacids remained unchanged. An efficient protein
Chemoselective Decarboxylative Protonation Enabled by Cooperative Earth‐Abundant Element Catalysis
作者:Yen‐Chu Lu、Julian G. West
DOI:10.1002/anie.202213055
日期:2023.1.16
Combining simple iron and thiol catalysts allows carboxylic acids to be directly converted to C−H bonds under visible light irradiation. The cocatalytic system exhibits a wide scope, is scalable, and preliminary mechanistic studies suggest it functions via a tandem ligand-to-metal charge transfer (LMCT)/Hydrogen Atom Transfer (HAT) mechanism.