We developed an environmentally friendly mechanochemical protocol to induce an effective Fischer indolisation to synthesize indoles and indolines taking advantage of oxalic acid and dimethylurea. The solvent-free procedure shows versatility and wide scope; it applies to a broad range of arylhydrazines and carbonyl compounds, leading to variously decorated indoles and indolenines. Upon suitable modification, the methodology can also allow preparing compounds of pharmaceutical interest.
Mechanochemical Fischer Indolisation: an Eco-friendly Design for a Timeless Reaction
Porcheddu, AndreaPrimo
;Mocci, Rita
;Cuccu, Federico;Fattuoni, Claudia;Delogu, Francesco;D'Auria, Maria ValeriaUltimo
2022-01-01
Abstract
We developed an environmentally friendly mechanochemical protocol to induce an effective Fischer indolisation to synthesize indoles and indolines taking advantage of oxalic acid and dimethylurea. The solvent-free procedure shows versatility and wide scope; it applies to a broad range of arylhydrazines and carbonyl compounds, leading to variously decorated indoles and indolenines. Upon suitable modification, the methodology can also allow preparing compounds of pharmaceutical interest.
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