process for the production of fluoresceine isothiocyanate * derivatives

摘要

A process for producing 2-halogenoallyl isothiocyanate ÄIÜ represented by the formula: CHEM wherein X1 is a halogen atom, which comprises reacting a compound represented by the formula: CHEM wherein X1 is a halogen atom and X2 is a leaving group, with a thiocyanate represented by the formula; M(SCN)n wherein M is a metal or an ammonium group and n is a valence number of M, in the presence of water under heating. According to the process for producing of the present invention, 2-halogenoallyl isothiocyanata ÄIÜ, which has an insecticidal effect as such and is useful as an intermediate for a medicine, an agricultural chemical and the like, can be produced on an industrially large scale in a good yield.