摘要
将新型双水杨叉乙二胺合钴[Co(Ⅱ)salen]/对甲基苯磺酸(PTS)催化体系用于硝基苯、苯胺氧化还原羰化合成N,N′-二苯基脲(DPU)反应,考察了反应条件的影响。以甲苯作溶剂,在n[Co(Ⅱ)salen]∶n(PhNO2)=1∶50、n[Co(Ⅱ)salen]∶n(PTS)=1、n(PhNH2)∶n(PhNO2)=4、150℃、p(CO)=3 MPa、t=7 h时,DPU的分离产率为74.0%,硝基苯、苯胺的转化率分别为86.6%和91.2%。
A novel catalytic system Co（ Ⅱ ）salen/p-toluenesulphonic acid（PTS） for the synthesis of N, N＇-diphenylurea （DPU） by oxidative-reductive carbonylation of nitrobenzene and aniline has been developed. The effects of reaction conditions were studied. When the reaction was carried out under the conditions as follows： n[Co（ Ⅱ ）salen] ： n（PhNO2） = 1：50, n[Co （ Ⅱ ）salen] ： n（PTS） = 1, n（PhNH2） ： n （PhNO2） = 4,150℃ ,p（CO） = 3 MPa, and t = 7 h, with toluene as a solvent,the isolated yield of DPU can reach 74% with PhNO2 and PhNH2 conversion of 86.6% and 91.2%, respectively.
出处
《现代化工》
CAS
CSCD
北大核心
2006年第9期35-37,39,共4页
Modern Chemical Industry
