31 7/84 Compounds Derived from Salicylic and Benzoic Acid 611 mixture was refluxed for 3 h. The separated solid was filtered off, the filtrate was concentrated and then poured into ice cold water. The solid which separated out was recrystallized from methanol/water. Compounds 4Wk were synthesized in the same way. 3-(2-hydroxyphenyl)-l-~ 2- hydroxybenzoyl)-4-(4-chlorophenyl~ formazan (5a) 2 g 4-chloroaniline was dissolved in 4 ...