【摘 要】
:
An efficient and straightforward procedure has been developed for the synthesis of highly substituted mono- and bis-N-aryl-3-aminodihydropyrrol-2-one-4-carboxyl
【机 构】
:
Department of Chemistry,Payame Noor University,Iran,Department of Chemistry,Faculty of Sciences,Univ
【出 处】
:
Chinese Chemical Letters
论文部分内容阅读
An efficient and straightforward procedure has been developed for the synthesis of highly substituted mono- and bis-N-aryl-3-aminodihydropyrrol-2-one-4-carboxylates via a one-pot, four-component domino reaction of amines, dialkyl acetylenedicarboxylates and formaldehyde in the presence of InCl3(20 mol%) in MeOH at ambient temperature. The salient advantages of this method are mild reaction conditions, environmentally benign, high to excellent yields, shorter reaction times, easy operation and no column chromatographic separation.
An efficient and straightforward procedure has been developed for the synthesis of highly substituted mono- and bis-N-aryl-3-aminodihydropyrrol-2-one-4-carboxylates via a one-pot, four-component domino reaction of amines, dialkyl acetylenedicarboxylates and formaldehyde in the presence of InCl3 (20 mol%) in MeOH at ambient temperature. The salient advantages of this method are mild reaction conditions, environmentally benign, high to excellent yields, shorter reaction times, easy operation and no column chromatographic separation.
其他文献
The title complex, C20H17N4Pd2Cl3·0.5CH3OH, crystallizes in the triclinic system, space group P1 with a = 9.927(6), b = 11.079(6), c = 11.233(6) ?, α = 73.970
破伤风抗毒素皮试致休克1例广东省澄海市外砂镇卫生院(515823)陈秋泉患者男,24岁。因左侧足底被铁钉刺伤伴肿痛3天,于1993年5月27日下午3时来院。既往健康.无药物过敏史。治疗给予精制破伤风抗毒素(TAT)1500IU肌
在前人对万佛殿大木结构实测及所绘制的相关图纸的基础上,清华大学综合运用全站仪、三维激光扫描仪和手工测量对这座重要的早期木结构进行了精细的测绘工作。通过现有数据的
患者男性,56岁,因咳嗽、低热,伴乏力1月余,以肺结核Ⅲ上/上菌(集一)进展期收住。入院前已给予INH、RFP、SM三联抗痨治疗近20d,INH为口服300mg/d,服药后无不适感。入院后改IN
近年来,随着我国国民经济的高速发展,工程建设规模的不断扩大,各种建筑施工安全生产方面的事故又呈上升趋势。究其原因,一是由于建筑施工多为施工环境和作业条件较差,不可预
据语言学家统计,世界上已查明的有五千六百五十一种语言,其中经过科学考证的,目前仅有五百种.使用人口超过一百万的语言只有一百四十种,用得最广的有十种,即汉语、英语、俄语
在人类的文明发展史上,文化遗产始终扮演者重要的角色,它是人类文明发展的最好见证,对研究人类文明的发展具有重大的作用。文化遗产包括物质文化遗产和非物质文化遗产物质文
患者女,52岁。因精神受刺激后出现厌食、恶心、呕吐1个月,伴情绪低沉、烦躁、多汗、消瘦,以呕吐原因待查收入院。查体:T37.5℃,P125次/min,R24次/min,BP13/8kPa。精神差,烦
例1,女,34岁。1990年10月13日因发热、头痛2d,双下肢无力5d入院。入院时热退,阳性体征:腹壁反射减弱、剑突以下触觉减退,以左侧明显,左巴彬斯奇氏征(±),左膝反射亢进,左下
随着我国经济建设的发展和城乡经济体制改革的不断深入,乡镇企业在全国迅速掘起,在整个国民经济中占有重要地位。乡镇企业的发展给农村带来了巨大的变化。然而由于缺乏安全