Azolinyl acetic acid derivative and azolinyl acetic acid derivative containing recording material

A recording material comprising, on a support, a recording layer containing a diazo compound and an azolinyl acetic acid derivative as a coupler which reacts with the diazo compound to form a color, wherein the azolinyl acetic acid derivative is a compound represented by the following general formula (1):

• wherein X represents an oxygen atom or a sulfur atom;
• R11 represents an alkyl group, an aryl group, a heterocyclic group, —OR13 or —NR14R15;
• R12 represents a substituent;
• R13 represents an alkyl group, an aryl group or a heterocyclic group;
• R14 and R15 each independently represents a hydrogen atom, an alkyl group, an aryl group or a heterocyclic group;
• n represents an integer from 0 to 4;
• and when n is an integer of 2 or greater, two or more R12s may be linked with each other to form a ring.