Oxonol dye compound, optical information recording medium using the same, and optical information
申请人:FUJI PHOTO FILM CO., LTD.
公开号:EP1253148A3
公开(公告)日:2002-11-13
The present invention provides an oxonol dye compound represented by the following general formula (I): The symbols in the formula are defined in the description. Also provided are an optical information recording medium having a recording layer comprising the oxonol dye, and an optical information recording method using the recording medium.
[EN] METHOD FOR PRODUCING OXONOL COMPOUND<br/>[FR] PROCÉDÉ POUR LA FABRICATION D'UN COMPOSÉ OXONOL
申请人:FUJI PHOTO FILM CO LTD
公开号:WO2006019146A1
公开(公告)日:2006-02-23
A method for producing an oxonol compound represented by formula (1) as defined in the specification, in which a compound represented by formula (2) as defined in the specification, a compound represented by formula (3) as defined in the specification and a methine source compound are allowed to undergo the reaction under a basic condition, and the reaction mixture is neutralized with an acid to effect precipitation of a free oxonol compound represented by formula (4) as defined in the specification as a crystal which are then isolated by solid-liquid separation, and said free compound is allowed to react with a compound represented by formula (5) as defined in the specification.