Cui, Hui-Ya published the artcileEngineering noble-metal-free metal-organic framework composite catalyst for efficient CO2 conversion under ambient conditions, COA of Formula: C8H14O, the main research area is copper bromide zeolite catalyst CO2 propargylamine propargyl alc cycloaddition.
The cyclization of propargylic alcs. and propargylic amines with CO2 are of great significance since the generated O/N-containing cyclic skeletons are extensively employed in pharmaceutical chem. and industrial production However, most of the reported catalysts only effectively catalyze propargylic alcs. or propargylic amines with CO2, and often involve noble-metal catalysts, high temperature and CO2 pressure. It is a great challenge that non-noble-metal catalysts catalyzed both propargylic alcs. and propargylic amines with CO2 under ambient conditions. Herein, CuBr@NH2-MIL-101 was successfully synthesized by loading CuBr nanoparticles into zeolite-type NH2-MIL-101 via simple thermal conversion method, and it displayed highly selective CO2 uptake properties. Importantly, CuBr@NH2-MIL-101 featured high catalytic activity for carboxylative cyclization of both propargylic alcs. and propargylic amines with CO2 under ambient conditions (25°C, 0.1 MPa CO2), resp. Moreover, CuBr@NH2-MIL-101 can be recycled at least three times without significant decline in catalytic activity. The combination explorations of NMR, FTIR and 13C isotope labeling experiments clearly illustrate the reaction process and mechanism. The d. functional theory (DFT) calculations uncover that CuBr and 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU) can synergistically activate substrates, and the proton-demetalation step with the highest energy barrier was the rate-determining step in two catalytic systems. To our knowledge, it is the first report of noble-metal-free catalyst that can simultaneously catalyze CO2 conversion with propargylic alcs. and propargylic amines under room temperature and atm. CO2 pressure.
Chemical Engineering Journal (Amsterdam, Netherlands) published new progress about Amines, propargyl Role: PEP (Physical, Engineering or Chemical Process), PRP (Properties), RCT (Reactant), PROC (Process), RACT (Reactant or Reagent). 107-54-0 belongs to class alcohols-buliding-blocks, name is 3,5-Dimethylhex-1-yn-3-ol, and the molecular formula is C8H14O, COA of Formula: C8H14O.
Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts