Recording material and compound
An object of the present invention is to provide a recording material or a recording sheet using, as a color-developing agent, a non-phenol-based compound good in color developing performance and the like. A compound represented by the following formula (I) is used as the color-developing agent: (wherein X represents CH 2 or the like; R 1 to R 3 each independently represent a hydrogen atom, a halogen atom or the like; n1 and n3 each independently represent any integer of 1 to 5; two groups represented by R 3 adjacent to each other on a benzene ring optionally bond to each other to form an optionally substituted 6-membered ring; and n2 represents any integer of 1 to 4).
1. A recording material containing a color former and at least one compound selected from the group consisting of compounds represented by the following formula (I):
wherein:
X represents CH 2 , C═O, or SO 2 ;
R 1 to R 3 each independently represent a hydrogen atom, a halogen atom, a nitro group, a cyano group, a linear, branched or cyclic C1-C6 alkylcarbonyl group, a linear, branched or cyclic C1-C6 alkyl group, a linear, branched or cyclic C1-C6 alkoxy group, a C2-C6 alkenyl group, a linear, branched or cyclic C1-C6 fluoroalkyl group, a N(R 4 ) 2 group, wherein R 4 represents a hydrogen atom, a phenyl group, a benzyl group, or a linear, branched or cyclic C1-C6 alkyl group, a NHCOR 5 group, wherein R 5 represents a linear, branched or cyclic C1-C6 alkyl group, an optionally substituted phenyl group, or an optionally substituted benzyl group;
n1 and n3 each independently represent any integer of 1 to 5;
two groups represented by R 3 adjacent to each other on a benzene ring optionally bond to each other to form an optionally substituted 6-membered ring;
n2 represents any integer of 1 to 4; and
when X is SO 2 , at least one R 1 and/or at least one R 2 is not a hydrogen atom.
2. A recording sheet having a recording material layer formed with the recording material according to claim 1 on a support.