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Catalytic Synthesis of Methylene Diphenyl Dicarbamate in AcOH/H2O Mixed Solvent
Alternative TitleChem. Res. Chin. Univ.
Pei Yi-xia1,2; Li Hui-quan1; Liu Hai-tao1; Zhang Qin-hua1,2; Zhang Yi1
2010-07-25
Source PublicationCHEMICAL RESEARCH IN CHINESE UNIVERSITIES
ISSN1005-9040
Volume26Issue:4Pages:550-553
AbstractIn a mixed solvent of acetic acid(AcOH)/water, methylene diphenyl dicarbamate(MDC) was synthesized by the condensation of methyl phenyl carbamate(MPC) and formaldehyde in the presence of an inorganic acid catalyst. Based on the different solubilities to MPC and MDC, the mixed solvent showed higher catalytic performance than pure water. The mixed solvent not only promoted the condensation of MPC but aslo exhibited the advantage of the product separation with the reactants. Under the optimized conditions: a H2SO4 mass fraction of 31%, a reaction temperature of 95 degrees C and reaction time of 3.5 h, the yield of MDC reached 74.3%. In addition, the recycle of the solvent was also investigated.; In a mixed solvent of acetic acid(AcOH)/water, methylene diphenyl dicarbamate(MDC) was synthesized by the condensation of methyl phenyl carbamate(MPC) and formaldehyde in the presence of an inorganic acid catalyst. Based on the different solubilities to MPC and MDC, the mixed solvent showed higher catalytic performance than pure water. The mixed solvent not only promoted the condensation of MPC but aslo exhibited the advantage of the product separation with the reactants. Under the optimized conditions: a H2SO4 mass fraction of 31%, a reaction temperature of 95 degrees C and reaction time of 3.5 h, the yield of MDC reached 74.3%. In addition, the recycle of the solvent was also investigated.
KeywordMixed Solvent Methylene Diphenyl Dicarbamate Formaldehyde Liquid Acid
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
URL查看原文
Indexed BySCI
Language英语
WOS KeywordN-PHENYL CARBAMATE ; DIMETHYL CARBONATE ; MILD CONDITIONS
WOS Research AreaChemistry
WOS SubjectChemistry, Multidisciplinary
WOS IDWOS:000281231200012
Citation statistics
Cited Times:6[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/6275
Collection研究所(批量导入)
Affiliation1.Chinese Acad Sci, Key Lab Green Proc & Engn, Inst Proc Engn, Beijing 100190, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Pei Yi-xia,Li Hui-quan,Liu Hai-tao,et al. Catalytic Synthesis of Methylene Diphenyl Dicarbamate in AcOH/H2O Mixed Solvent[J]. CHEMICAL RESEARCH IN CHINESE UNIVERSITIES,2010,26(4):550-553.
APA Pei Yi-xia,Li Hui-quan,Liu Hai-tao,Zhang Qin-hua,&Zhang Yi.(2010).Catalytic Synthesis of Methylene Diphenyl Dicarbamate in AcOH/H2O Mixed Solvent.CHEMICAL RESEARCH IN CHINESE UNIVERSITIES,26(4),550-553.
MLA Pei Yi-xia,et al."Catalytic Synthesis of Methylene Diphenyl Dicarbamate in AcOH/H2O Mixed Solvent".CHEMICAL RESEARCH IN CHINESE UNIVERSITIES 26.4(2010):550-553.
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