Tetrahedron p. 4579 - 4586 (1992)
Update date:2022-08-03
Topics:
Bellesia, Franco
Boni, Monica
Ghelfi, Franco
Grandi, Romano
Pagnoni, Ugo M.
Pinetti, Adriano
α-Chloroacetals are obtained in almost quantitative yields, by treating acetals with MnO2-trimethylchlorosilane in CH3OH:CH3CN (1:1).The halogenation is explained by a ligand-transfer process on an enolether intermediate, mediated by a Mn(IV)-chloride species.Key Words: Acetals, Aldehydes, Chlorination, Maganese(IV)oxide, Trimethylchlorosilane, Ligand-transfer
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