PHENYLURETHANE COMPOUNDS AND METHODS FOR PRODUCING SAME, ASYMMETRIC UREA COMPOUNDS AND METHODS FOR PRODUCING SAME, BARBITURIC ACID DERIVATIVE, AND DIAZO THERMAL RECORDING MATERIAL CONTAINING THE DERIVATIVE

摘要

Phenylurethane compounds of the following general formula (1); asymmetric urea compounds of the following general formula (10) obtained from the phenylurethane compounds; barbituric acid derivatives of general formula (18) produced from the asymmetric urea compounds, which have specific substituents and are useful in diazo thermal recording materials; and diazo thermal recording materials containing the barbituric acid derivative.