A series of N-substituted （Z）-3-（（2-benzyl）-4-oxopent-2-yl）pyrrole-2,5-diones were synthesized and characterized. The compounds were synthesized from dimethyl-2-（（Z）-2-（benzylamino）-4-oxopent-2-en-3-yl） fu...A series of N-substituted （Z）-3-（（2-benzyl）-4-oxopent-2-yl）pyrrole-2,5-diones were synthesized and characterized. The compounds were synthesized from dimethyl-2-（（Z）-2-（benzylamino）-4-oxopent-2-en-3-yl） fumarate （9） and dimethyl acetylenedi-carboxylate followed by reaction with some amines in refluxing ethanol. The identification of the compounds were based on spectroscopic analysis such as 1R （infrared）, UV （ultraviolet）, ^1H-NMR （nuclear magnetic resonance） and the microanalysis of the elements （CHN （microanalysis）） data.展开更多
以马来酸酐和苯甲胺为原料制备了N-苄基马来酰亚胺(NBMI),然后采用溶液聚合法与甲基丙烯酸十八酯、丙烯酸共聚合成了油溶性三元聚合物降黏剂BSA,并用红外光谱表征聚合物的结构和组成特性。通过对其降黏效果的评价,确定了最佳合成条件为...以马来酸酐和苯甲胺为原料制备了N-苄基马来酰亚胺(NBMI),然后采用溶液聚合法与甲基丙烯酸十八酯、丙烯酸共聚合成了油溶性三元聚合物降黏剂BSA,并用红外光谱表征聚合物的结构和组成特性。通过对其降黏效果的评价,确定了最佳合成条件为:n(甲基丙烯酸十八酯)∶n(NBMI)∶n(丙烯酸)=8∶2∶2,引发剂用量为1.2%,反应温度为75℃,反应时间为5 h。在50℃条件下,降黏剂加量为1 000 mg/L时,稠油的黏度由4 360 m Pa·s降到873 m Pa·s,表现出了良好的降黏效果。展开更多
Using 2,3-dichloro-5,6-dicyano-p-benzoquinone(DDQ)as the oxidant,we communicate an efficient oxidative C–N coupling of benzylic C–H bonds with amides to afford a series of amination products in good yields.A wide ra...Using 2,3-dichloro-5,6-dicyano-p-benzoquinone(DDQ)as the oxidant,we communicate an efficient oxidative C–N coupling of benzylic C–H bonds with amides to afford a series of amination products in good yields.A wide range of functional groups as well as various sulfonamides and carboxamides are well tolerated.Moreover,this reaction involves both the challenging C–H functionalization and C–N bond formation.展开更多
文摘A series of N-substituted （Z）-3-（（2-benzyl）-4-oxopent-2-yl）pyrrole-2,5-diones were synthesized and characterized. The compounds were synthesized from dimethyl-2-（（Z）-2-（benzylamino）-4-oxopent-2-en-3-yl） fumarate （9） and dimethyl acetylenedi-carboxylate followed by reaction with some amines in refluxing ethanol. The identification of the compounds were based on spectroscopic analysis such as 1R （infrared）, UV （ultraviolet）, ^1H-NMR （nuclear magnetic resonance） and the microanalysis of the elements （CHN （microanalysis）） data.
文摘以马来酸酐和苯甲胺为原料制备了N-苄基马来酰亚胺(NBMI),然后采用溶液聚合法与甲基丙烯酸十八酯、丙烯酸共聚合成了油溶性三元聚合物降黏剂BSA,并用红外光谱表征聚合物的结构和组成特性。通过对其降黏效果的评价,确定了最佳合成条件为:n(甲基丙烯酸十八酯)∶n(NBMI)∶n(丙烯酸)=8∶2∶2,引发剂用量为1.2%,反应温度为75℃,反应时间为5 h。在50℃条件下,降黏剂加量为1 000 mg/L时,稠油的黏度由4 360 m Pa·s降到873 m Pa·s,表现出了良好的降黏效果。
基金supported by the National Basic Research Program of China(2011CB808600,2012CB725302)the National Natural Science Foundation of China(21390400,21272180,21302148)+2 种基金the Research Fund for the Doctoral Program of Higher Education of China(20120141130002)the Program for Changjiang Scholars and Innovative Research Team in University(IRT1030)The Program of Introducing Talents of Discipline to Universities of China(111 Program)is also appreciated
文摘Using 2,3-dichloro-5,6-dicyano-p-benzoquinone(DDQ)as the oxidant,we communicate an efficient oxidative C–N coupling of benzylic C–H bonds with amides to afford a series of amination products in good yields.A wide range of functional groups as well as various sulfonamides and carboxamides are well tolerated.Moreover,this reaction involves both the challenging C–H functionalization and C–N bond formation.
