| abstract |
A process for introducing thiocarboxylic ester at ortho-position of phenols or phenylamines which comprises reacting a phenyl compound having hydroxy group or optionally substituted amino or cyclic amino group, of which at least one ortho-position is vacant, with C₁ - C₅ alkyl thiocyanate, C₇ - C₁₃ aralkyl thiocyanate or C₆ - C₁₂ aryl thiocyanate in the presence of a boron trihalide and hydrolyzing the resultant product under acidic conditions is provided, and said process is useful in the synthesis of medicinals, pesticides and dyes. |