Sughrue Mion, PLLC
Pyrrolopyrimidineone compound and heat-sensitive recording material using the same
Disclosed are a pyrrolopyrimidineone compound represented by the following general formula (1) and a heat-sensitive recording material using the pyrrolopyrimidineone compound as a coupler:General formula (1) wherein R1 and R2 each independently represents a hydrogen atom, a halogen atom, an aryl group, an alkyl group, a cyano group, an acyl group, a carbamoyl group, an alkoxycarbonyl group, an aryloxycarbonyl group, an alkylsulfonyl group, or an arylsulfonyl group; R3 represents an amino group, a substituted amino group, a hydroxyl group, an acyloxy group, an arylcarboxyl group, an alkoxy group, an aryloxy group, an alkylthio group, or an arylthio group; R4 represents a hydrogen atom, a halogen atom, or an electron attracting group whose Hammett substituent constant &sgr;p is 0.2 or more; and L represents a substituent group which can leave when the compound reacts with a diazonium salt. The pyrrolopyrimidineone compound produces a good purple to cyan color hue and a sufficient color density.
Fuji Photo Film Co., Ltd.
B C G
B41M C07D G03C
additional inventional inventional
Mitsuyuki Kazunori Hisao
Tsurumi Nigorikawa Yamada