Electrochemical C(sp3)-H Lactonization of 2-Alkylbenzoic Acids toward Phthalides.
Org Lett
; 25(1): 298-303, 2023 01 13.
Article
em En
| MEDLINE
| ID: mdl-36583568
ABSTRACT
Herein, we report direct electrochemical C(sp3)-H lactonization of 2-alkylbenzoic acids toward phthalides. The reaction provides a wide substrate scope of 2-alkylbenzoic acids bearing primary to tertiary C(sp3)-H bonds by utilizing a graphite anode, dichloromethane (DCM) solvent, hexafluoroisopropanol (HFIP) cosolvent, and n-Bu4NClO4 electrolyte. Our synthetic approach offers a simple, intuitive, and atom-economical protocol to synthesize various phthalides (25 examples, up to 92% yield) and obtain other 5- and 6-membered lactones (10 examples, up to 83% yield).
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Benzofuranos
/
Lactonas
Idioma:
En
Ano de publicação:
2023
Tipo de documento:
Article