Synthetic strategy toward furyl- and benzofuryl-containing building blocks for organic materials

A synthetic approach to furyl- and benzofuryl-containing building blocks utilizing easily accessible substrates is reported. Cascade acid-catalyzed reactions of 2-methylfuran with α,β-unsaturated carbonyl compounds or salicyl alcohols followed by oxidation afford functionalized furans and benzofurans, respectively. Synthetic potential of the obtained products was demonstrated by synthesizing hetaryl-substituted heterocycles, which may find an application in materials chemistry

Cs-induced charge transfer on (2x4)-GaAs(001) studied by photoemission

Cesium adsorption on 2x4 GaAs (001) was studied by photoemission and low energy electron diffraction. The different Cs induced changes of the As 3d and Ga 3d core level spectra show that charge transfer is almost complete for Ga surface sites, but is negligible to surface As at a coverage smaller than 0.3 ML. The situation is opposite for a coverage larger than 0.3ML, at which transfer occurs to As but no longer to Ga. Charge transfer to As atoms leads to disordering and destabilization and induces surface conversion from the As-rich surface to the Ga-rich 4x2 one after annealing at a reduced temperature of 450 C

Synthetic strategy toward furyl- and benzofuryl-containing building blocks for organic materials

Received: 17.05.22. Revised: 23.06.22. Accepted: 25.06.22. Available online: 12.07.22.A synthetic approach to furyl- and benzofuryl-containing building blocks utilizing easily accessible substrates is reported. Cascade acidcatalyzed reactions of 2-methylfuran with α,β-unsaturated carbonyl compounds or salicyl alcohols followed by oxidation afford function-alized furans and benzofurans, respectively. Synthetic potential of the obtained products was demonstrated by synthesizing hetarylsubstituted heterocycles, which may find an application in materials chemistry.The research was supported by the Perm Research and Education Centre for Rational Use Subsoil, 2022

SYNTHESIS OF FUNCTIONALIZED DIHYDROPYRROLES AND DIHYDROFURANS VIA INTRAMOLECULAR FURAN-YNE REACTION AND THEIR FURTHER ANNULATION

This work was supported by Russian Science Foundation (project 21-73-10063)

REARRANGEMENT OF FURYL-TETHERED OXIMES: SYNTHESIS OF FUNCTIONALIZED PYRROLES

This work was supported by the Russian Foundation for Basic Research, project # 20-33-70079

REARRANGEMENT OF FURYL-TETHERED OXIMES: SYNTHESIS OF FUNCTIONALIZED PYRROLES

Polyarylated pyrroles have been extensively utilized as building-blocks in material science. High demand for functionalyzed pyrrole substrates motivated us to develop a general synthetic protocol toward such valuable compounds based on furan dearomatization approach.This work was supported by the Russian Foundation for Basic Research, project # 20-33-70079