Process for the preparation of benzimidazolone-(2)
摘要
Benzimidazolone-(2) is obtained in good yield and high purity when o-phenylene diamine is condensed with urea in water at a pH of 4 to 9 and a temperature above 90 DEG C.
申请公布号
US4269989(A)
申请公布日期
1981.05.26
申请号
US19790105106
申请日期
1979.12.19
申请人
HOECHST AKTIENGESELLSCHAFT
发明人
HEISE, HARTMUT;HILLE, ERNST;WAGNER, REINHARD;KUEMMERLE, KURT
