4-chloro-2-phenylphenol

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 79.5 g (0.389 mol) of 2-phenyl-4-chlorophenol were slowly heated to 150° C. with 65.7 g (0.478 mol) of phosphorus trichloride. Hydrogen chloride was evolved at the same time. When the reaction was complete, the mixture was distilled at 0.027 kPa. 80 g (67% of theory relative to the 2-phenyl-4-chlorophenol employed) of the abovementioned substance passed over at a temperature of 145° to 146° C. (see formula sheet, formula V where R1 =2-chloro and R2 =H) the mixture was distilled at 0.027 kPa passed over at a temperature of 145° to 146° C. (see formula sheet, formula V where R1 =2-chloro and R2 =H)