F. Bellesia et al., 2,2-Dichloroaldehydes and 2,2-dichlorocarboxylic acids from 2-picoline center dot HCl catalyzed chlorination of aldehydes, SYNLETT, (1), 2000, pp. 146-148
An efficient preparation of 2,2-dichloroaldehydes and 2,2-dichlorocarboxyli
c acids has been achieved by chlorination of aldehydes using 2-picoline hyd
rochloride as recoverable catalyst.