Fungicidal dichloro phenyl hydantoin derivs. - prepd. by reacting dichloro phenyl hydantoin with halogenated aldehydes

摘要

New hydantoin derivs. are cpds. of formula (I) (where R is H or CH3; and X and Y are Cl or Br, or X is Cl and Y is CH2Cl). (I) are fungicides with prophylactic and curative activity against phytopathogenic fungi and microorganisms which attack industrial products such as textiles, paints and cellulose-contg. materials. Specific cpds. (I) include 1-(1-hydroxy-2,2,2-trichloroethyl)-3-(3,5-dichlorophenyl)-hydanto- in. In an example, this cpd. is prepd. in 85% yield by stirring chloral with 3-(3,5-dichlorophenyl)-hydantoin in the presence of conc. HCl for 8 hours at 85 degrees C.