Electrochemical transformation of biomass-derived oxygenates

Science China Chemistry, Journal Year: 2023, Volume and Issue: 66(4), P. 1011 - 1031

Published: Feb. 3, 2023

Language: Английский

---

A general and expedient amination of alcohols catalysed by a single-site (NN)Co(ii)-bidentate complex under solventless conditions

Catalysis Science & Technology, Journal Year: 2023, Volume and Issue: 14(1), P. 98 - 109

Published: Nov. 22, 2023

Here we designed and synthesized a NN–Co II bidentate complex efficiently used it for general expedient amination of alcohols under benign, solventless conditions.

Language: Английский

---

Lewis Acid-Mediated Regioselective Hydrofunctionalization of Styrenes with Isatins and Heterocycles

The Journal of Organic Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 9, 2025

The ligand-free Lewis acid-mediated regioselective hydroamination and hydroarylation of styrenes have been successfully developed in the presence isatins or heterocyclic aryl compounds such as benzothiophenes benzofurans. reactions tolerate a variety functional groups afford corresponding products moderate to good yields. Deuterium labeling experiments show that functionalized hydrogen was derived from nitrogen-hydrogen substrates hydroamination. Preliminary mechanistic studies suggest may be radical carbocation process.

Language: Английский

---

Targeted Conversion of Biomass into Primary Diamines via Carbon Shell-Confined Cobalt Nanoparticles

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 30, 2025

Primary diamines are valuable yet challenging to synthesize due issues such as product and intermediate condensation catalyst poisoning. To address these problems, effective synthesis systems must be explored. Here, 2,5-bis(aminomethyl)furan (BAMF), a biomass-derived primary diamine, is chosen the model for constructing system. A series of carbon-shell confined Co nanoparticles (Co@CNT-x) fabricated BAMF. The Co@CNT-700 catalyst, with ca. 4 layers carbon shells, achieves an outstanding 96% isolated yield BAMF through reductive amination 2,5-diformylfuran dioxime. In this system, excess NH3 atmosphere necessary prevent reactions by competitive reactions, while shells protect from amine Control experiments indicate that dioxime primarily follows H2-assisted dehydration pathway form key imine intermediates, side products amides nitriles can also eventually converted into Co@CNT-700, leading its excellent selectivity. Notably, employing sequential three-step strategy, 87% achieved directly using biomass raw material. evaluate tolerance 9 other important aromatic, cycloalkyl, linear alkyl diamines, 1,4-cyclohexanediamine, obtained in high yields 87-99%.

Language: Английский

---

The sulfenylation of enamine esters with heterocyclic thiols or disulfides in water and application to DNA-compatible chemistry

Chinese Chemical Letters, Journal Year: 2025, Volume and Issue: unknown, P. 111006 - 111006

Published: March 1, 2025

Language: Английский

---