Micelle Promoted Synthesis of Bis-(indolyl)methanes
作者:Kumar, Krishnammagari S.、Reddy, Chinnapareddy B.、Krishna, Balam S.、Srinivasulu, Kambam、Reddy, Cirandur S.
DOI:10.2174/157017812800233679
日期:2012.4.24
Bis-(indolyl)methanes were synthesized by a simple, clean and highly efficient Tween-20 micelle promoted reaction of indole with aldehydes in water by the single step reaction. The absence of electrical double layer in the nonionic surfactant micelles makes them as potential model adsorbent in the interfacial processes. This approach had explored the present synthesis of bis-(indolyl)methanes.
Water-Mediated Green and Efficient Synthesis of Bis(Indolyl)methanes Using Ammonium Iron(II) Sulfate
作者:Vikas D. Kadu、Dinesh N. Nadimetla、Mahesh G. Hublikar、Dattatraya G. Raut、Raghunath B. Bhosale
DOI:10.2174/1570178616666190522121135
日期:2019.12.12
An efficient protocol for the synthesis of symmetrical 3,3’-bis(indolyl)arylmethanes catalyzed by green and easily available ammonium iron(II) sulfate (Mohr’s salt) has been developed in “green” water solvent afforded in excellent yield.
One-pot construction of highly functionalized 4<i>H</i>-chromenes using K-10 montmorillonite in aqueous medium
作者:Mohd Yeshab Ansari、Sumedha Swarnkar、Atul Kumar
DOI:10.1039/d3nj04619b
日期:——
structural motifs in natural products and pharmaceutically active molecules, from salicylaldehydes, dimedones and carbon, nitrogen, or sulfur-based bioactive nucleophiles in aqueous medium. Easy recovery and reusability of K-10 montmorillonite without significant reaction erosion, in a short reaction time, with broad substrate scope, and excellent yields, without requiring a toxic organic solvent during the
在此,我们报告了第一个一锅法 K-10 蒙脱石促进的密集功能化 4 H -色烯骨架的构建,这些骨架是天然产物和药物活性分子中广泛存在的结构基序,来自水杨醛、二甲酮和碳、氮或硫水介质中基于生物活性的亲核试剂。K-10 蒙脱石易于回收和重复使用,没有明显的反应侵蚀,反应时间短,底物范围广,收率优异,整个过程中不需要有毒有机溶剂,使得该协议对于工业界和学术界都非常有用。蒙脱土被证明是提供反应的关键,因为使用蒙脱石以外的其他催化剂主要产生许多副产物。
Room-Temperature Synthesis of Diindolylmethanes Using Silica-Supported Sulfuric Acid as a Reusable Catalyst Under Solvent-Free Conditions
作者:Yan Zhang、Xiang Chen、Jun Liang、Zhi-cai Shang
DOI:10.1080/00397911.2010.505696
日期:2011.8.15
[image omitted] Efficient electrophilic substitution reactions of indoles with various aromatic and aliphatic aldehydes were carried out using a catalytic amount of H2SO4 center dot SiO2 under solvent-free conditions to afford the corresponding bis(indolyl)methanes in excellent yields.
Biocatalysts for cascade reaction: porcine pancreas lipase (PPL)-catalyzed synthesis of bis(indolyl)alkanes
作者:Ziwei Xiang、Zhiqiang Liu、Xiang Chen、Qi Wu、XianFu Lin
DOI:10.1007/s00726-013-1547-4
日期:2013.10
A cascade reaction between aldehydes and indole catalyzed by lipase from porcine pancreas Type II (PPL) in solvent mixture at 50 A degrees C was reported for the first time. Some control experiments had been designed to demonstrate that the PPL was responsible for the cascade reaction. After the optimization of the stepwise process, a series of bis(indolyl)alkanes were prepared in moderate to excellent yields under the catalysis of PPL.