PROCESS OF PREPARING 2,3,5-TRIHALOBENZALDEHYDE

摘要

A process of preparing 2,3,5-trihalobenzaldehyde, which comprises the steps of (i) reacting a compound of formula (I), wherein Hal is halogen, with a di-C1-4 alkylformamide; (ii) allowing the resulting complex to rearrange; and (iii) quenching the rearranged complex with water.