M. Boni et al., TRICHLOROISOCYANURIC ACID OXIDATION OF 2-CHLORO ALDEHYDE ACETALS TO 2-CHLORO ACID-ESTERS, Bulletin of the Chemical Society of Japan, 67(1), 1994, pp. 156-159
2-Chloro acid methyl esters were prepared in good yields treating 2-ch
loro aldehyde dimethyl acetals with trichloroisocyanuric acid in DMF.
Aldehyde dimethyl acetals with the 2-halogen on a tertiary carbon atom
were poorly reactive and could be oxidized effeciently only after the
ir transformation into 1,3-dioxolanes.