of moles of the NaOH added is the same as the no. of moles of amine, so that the reaction prod. is in the form of the Na salt; (c) treating the Na salt with one equiv. of a water-soluble acid for each mol (II) dissolved in step (a) to liberate (I); and (d) pptg. (...
(I) include 2,2-dichloro-N-(3,4-dichlorophenyl)-acetamidine. In an example, this is prepd. in 75% yield by slowly treating a solution of N-(3,4-dichlorophenyl)-N'-formyl-3,3,3-trichloroacetaldehyde aminal (33.7g) in 95% EtOH (150ml) with NaOH (8g) in EtOH (80ml) and ...
of moles of the NaOH added is the same as the no. of moles of amine, so that the reaction prod. is in the form of the Na salt; (c) treating the Na salt with one equiv. of a water-soluble acid for each mol (II) dissolved in step (a) to liberate (I); and (d) pptg. (...