Heat-sensitive recording material

A heat-sensitive recording material comprising a substrate having thereon a heat-sensitive recording layer containing a diazonium salt compound and a coupler, which reacts with the diazonium salt compound upon heating to develop a color, wherein

• the coupler includes at least one of pyrrolo›1,2-a!pyrimidine compounds represented by the following general formula (1):
• ##STR6## wherein R.sup.1 to R.sup.4 each represents a hydrogen atom, a halogen atom, an aryl group, an alkyl group, a cyano group, an acyl group, a substituted carbamoyl group, an alkoxycarbonyl group, an aryloxycarbonyl group, an acyloxy group, an alkoxy group, an aryloxy group, an alkylthio group, an arylthio group, a substituted sulfamoyl group, an alkylsulfonyl group, an arylsulfonyl group, an alkylphosphoryl group, an arylphosphoryl group, or a substituted amino group.