Name: 6-Fluoronicotinonitrile. So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic. Compound: 6-Fluoronicotinonitrile, is researched, Molecular C6H3FN2, CAS is 3939-12-6, about Tetramethylammonium Fluoride Alcohol Adducts for SNAr Fluorination.
Nucleophilic aromatic fluorination (SNAr) is among the most common methods for the formation of C(sp2)-F bonds. Despite many recent advances, a long-standing limitation of these transformations was the requirement for rigorously dry, aprotic conditions to maintain the nucleophilicity of fluoride and suppress the generation of side products. This report addresses this challenge by leveraging tetramethylammonium fluoride alc. adducts (Me4NF·ROH) as fluoride sources for SNAr fluorination. Through systematic tuning of the alc. substituent (R), tetramethylammonium fluoride tert-amyl alc. (Me4NF·t-AmylOH) was identified as an inexpensive, practical, and bench-stable reagent for SNAr fluorination under mild and convenient conditions (80°C in DMSO, without the requirement for drying of reagents or solvent). A substrate scope of more than 50 (hetero) aryl halides and nitroarene electrophiles was demonstrated.
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Reference:
Benzofuran – Wikipedia,
Benzofuran | C8H6O – PubChem