alpha-Chloroacetals am 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.
ACETAL CHLORINATION WITH MNO2-TRIMETHYLCHLOROSILANE / Bellesia, Franco; Boni, M; Ghelfi, Franco; Grandi, Romano; Pagnoni, Ugo Maria; Pinetti, Adriano. - In: TETRAHEDRON. - ISSN 0040-4020. - STAMPA. - 48:(1992), pp. 4579-4586.
ACETAL CHLORINATION WITH MNO2-TRIMETHYLCHLOROSILANE
BELLESIA, Franco;GHELFI, Franco;GRANDI, Romano;PAGNONI, Ugo Maria;PINETTI, Adriano
1992
Abstract
alpha-Chloroacetals am 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.
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