3,4-ethylene dioxythiophene (EDOT), as a monomer of commercial conductive poly(3,4-ethylene dioxythiophene) (PEDOT), has been facilely incorporated into a series of new π-conjugated polymer-based photocatalysts, i.e., BSO2-EDOT, DBT-EDOT, Py-EDOT and DFB-EDOT,...
A versatile synthetic protocol involving the room temperature direct arylation of benzothiazole with a wide variety of iodoarenes under Ag-promoted Pd-catalyzed conditions in HFIP as the reaction solvent has been...
AbstractFour isomers of 4,7′-bibenzothiophene scaffolds bearing two different halogen (Br, Cl) and triisopropylsilyl substituents have been synthesized from the two multihalobenzo[b]thiophenes via iodoselective Miyaura borylation reaction using potassium benzoate as a base. Further investigation into the reactivity of 4,7′-bibenzothiophenes in substitution reaction, Suzuki–Miyaura cross-coupling reaction, and C–H direct arylation reaction revealed that tetrasubstituted 4,7′-bibenzothiophenes can be synthesized site- (chemo-) selectively, which are promising novel components for molecular architecture.
Coupling reagents toward direct arylation of C2-H bonds in aryl azoles are often limited to aryl halides. Herein we report a functionalization of the acidic sp2 C-H bonds in benzothiazoles with benzaldehyde derivatives. Reactions proceeded in the presence of commercially ready CuFe2O4 catalyst. Scope of functional groups included chloro, nitro, cyano, and ester groups.