Metal-Organic Framework Derived Phytate-Iron for Efficient Synthesis of 2-Arylbenzoxazole via Hydrogen Transfer Strategy

Chinese Journal of Organic Chemistry, Journal Year: 2023, Volume and Issue: 43(8), P. 2934 - 2934

Published: Jan. 1, 2023

Recently, metal-organic framework (MOF) and its derivatives showed great application potential in catalysis.ZIF-L-Co@phytate-iron (ZIF-L-Co@PA-Fe) heterogeneous MOF were synthesized by a facile surface engineering method.Phytic acid functionalized ZIF-L-Co (ZIF-L-Co@PA) was firstly prepared through organic ligand exchange of phytic (PA).Then, ZIF-L-Co@PA-Fe with unique heterostructure via coordination occurred between Fe 3 ＋ ligands.Benefiting from the greatly modify metal-ligand interactions, as-designed hybrids exhibited excellent catalytic activities toward hydrogen transfer reactions.2-Substituted benzoxazole successfully hydrogenative annulation o-nitrophenol alcohols catalyzed under solvent-free conditions.No additional additives, such as oxidants, reductants or bases required for this reaction.Moreover, complex reusability could be recycled up to five times without obvious decline activity.This work may provide effective guidance optimizing performance other series derivatives.

Language: Английский

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Diastereoselective Dearomatization of Chalcone‐Based Quinolinium Salts to Assemble Bridged Quinobenzazepine Polycycles

European Journal of Organic Chemistry, Journal Year: 2023, Volume and Issue: unknown

Published: Sept. 13, 2023

Abstract Quinobenzazepines are useful in medicinal chemistry, but their synthesis is very challenging. Herein, we designed and synthesized a range of multi‐functional chalcone‐based quinolinium salts; synthetic application the rapid straightforward construction quinobenzazepines was successfully explored. A wide oxa‐bridged quinobenzazepine polycycles were afforded serendipitously through dearomative cascade reaction our newly developed salts acetylacetone. This strategy features high bond‐ ring‐forming efficiency complete regio‐ diastereoselective control.

Language: Английский

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Six-membered ring systems: With O and/or S atoms

Progress in heterocyclic chemistry, Journal Year: 2023, Volume and Issue: unknown, P. 493 - 568

Published: Jan. 1, 2023

Language: Английский

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