A compound represented by formula (I):
wherein X is a carbonyl or sulfonyl group; R
2
is an alkyl, alkaryl or aryl group; and R
1
is an amino group or an N-alkyl-amino group if Y is a halogen atom, an alkyl group or a hydroxy group; and R
1
is a halogen atom, an alkyl group or a hydroxy group if Y is an amino group or an N-alkyl-amino group; and a thermographic recording material comprising a support and a thermosensitive element, the thermosensitive element comprising at least one substantially light-insensitive organic silver salt, at least one organic reducing agent therefor in thermal working relationship therewith, at least one binder and at least one compound represented by formula (I).
由式(I)代表的化合物:
其中 X 是羰基或磺酰基; R
2
是烷基、烷芳基或芳基;以及 R
1
是
氨基或 N-烷基-
氨基,如果 Y 是卤素原子、烷基或羟基;以及 R
1
是卤素原子、烷基或羟基(如果 Y 是
氨基或 N-烷基-
氨基);以及一种热成像记录材料,包括一个支撑体和一个热敏元件,热敏元件包括至少一种基本上对光不敏感的有机
银盐、至少一种与之有热工作关系的有机还原剂、至少一种粘合剂和至少一种由式(I)表示的化合物。