洛阳师范学院学报
洛暘師範學院學報
락양사범학원학보
Journal of Luoyang Teachers College
2015年
2期
63~64
,共null页
4,4'-二硝基二苯脲 有机合成 合成条件
4,4'-二硝基二苯脲 有機閤成 閤成條件
4,4'-이초기이분뇨 유궤합성 합성조건
N; N'-Bis(4-nitrophenyl) urea; organic synthesis; synthesis conditions
以蒸馏水为溶剂、浓盐酸作催化剂、对硝基苯胺与尿素为原料合成了4,4'-二硝基二苯脲.采用IR对其结构进行了表征,并确定了最佳合成条件.结果表明,在最佳原料配比:对硝基苯胺∶尿素∶浓盐酸(摩尔比)=1.00∶1.00∶1.25条件下回流7h,产率可达68.7%.
以蒸餾水為溶劑、濃鹽痠作催化劑、對硝基苯胺與尿素為原料閤成瞭4,4'-二硝基二苯脲.採用IR對其結構進行瞭錶徵,併確定瞭最佳閤成條件.結果錶明,在最佳原料配比:對硝基苯胺∶尿素∶濃鹽痠(摩爾比)=1.00∶1.00∶1.25條件下迴流7h,產率可達68.7%.
이증류수위용제、농염산작최화제、대초기분알여뇨소위원료합성료4,4'-이초기이분뇨.채용IR대기결구진행료표정,병학정료최가합성조건.결과표명,재최가원료배비:대초기분알∶뇨소∶농염산(마이비)=1.00∶1.00∶1.25조건하회류7h,산솔가체68.7%.
N,N'-Bis( 4-nitrophenyl) urea is prepared by reacting p-nitroaniline with urea in the presence of distilled water as solvent at refluxing temperature. Its structure is elucidated with IR and the optimal synthesis conditions are established. As the results indicate,under the optimal ratio of materials( p-nitroaniline : urea : concentrated hydrochloric acid = 1. 00 : 1. 00 : 1. 25),under reflux for 7h,the production rate can reach 68. 7%.