Optical information recording medium using a phthalocyanine compound

摘要

A phthalonitrile compound of formula (I); (I) and a diiminoisoindoline compound of formula (II): (II) are allowed to react to produce a phthalocaynine compound of formula (III), (III) which is an effective material for a near-infrared absorbing material and also as a recording material for an optical information recording medium. The methods of producing the phthalonitrile compound of formula (I) and the pthalocaynine compound of formula (III) are proposed.