生产了由MCM-48 / H 5 PW 10 V 2 O 40组成的非均质材料,并将其用作高效,生态友好且高度可回收的催化剂,用于3,4-二氢喹喔啉-2-胺的一锅多组分合成,二氮杂-四唑和苯并二氮杂-2-羧酰胺衍生物在水性介质中和室温下以高收率在较短的反应时间(40-60分钟)内产生。可回收的催化剂易于循环至少五次,而没有任何催化活性的损失。使用1 H NMR和13 C NMR光谱确认获得的产物的结构。
Fe3O4/SiO2 nanoparticles: an efficient and magnetically recoverable nanocatalyst for the one-pot multicomponent synthesis of diazepines
作者:Ali Maleki
DOI:10.1016/j.tet.2012.07.034
日期:2012.9
In this research, a new protocol for the one-pot multicomponent synthesis of diazepine derivatives using a 1,2-diamine, a linear or cyclic ketone, and an isocyanide in the presence of a catalytic amount of silica-supported iron oxide (Fe3O4/SiO2) nanoparticles at ambient temperature in excellent yields is described.
Supported <i>p</i>-Toluenesulfonic Acid as a Highly Robust and Eco-Friendly Isocyanide Scavenger
作者:Jhonny Azuaje、Alberto Coelho、Abdelaziz El Maatougui、José Manuel Blanco、Eddy Sotelo
DOI:10.1021/co100035z
日期:2011.1.10
We document here the use of polymer-supported p-toluenesulfonic acid as a highly effective, robust, economical and eco-friendly isocyanide scavenger. The herein described strategy; circumvent the intense and repulsive odor of volatile isocyanides, enabling simplified and odorless workup and purifications. The usefulness of the new scavengers has been validated in a set of diverse isocyanide-based organic transformations and this approach is also amenable to parallel synthesis techniques.
Eco-friendly synthesis of 3,4-dihydroquinoxalin-2-amine, diazepine-tetrazole and benzodiazepine-2-carboxamide derivatives with the aid of MCM-48/H<sub>5</sub>
PW<sub>10</sub>
V<sub>2</sub>
O<sub>40</sub>
efficient, eco‐friendly and highly recyclable catalyst for the one‐pot and multicomponentsynthesis of 3,4‐dihydroquinoxalin‐2‐amine, diazepine‐tetrazole and benzodiazepine‐2‐carboxamide derivatives in aqueous media and at room temperature with high yields in short reaction times (40–60 min). The recoverable catalyst was easily recycled at least five times without any loss of catalytic activity. The
生产了由MCM-48 / H 5 PW 10 V 2 O 40组成的非均质材料,并将其用作高效,生态友好且高度可回收的催化剂,用于3,4-二氢喹喔啉-2-胺的一锅多组分合成,二氮杂-四唑和苯并二氮杂-2-羧酰胺衍生物在水性介质中和室温下以高收率在较短的反应时间(40-60分钟)内产生。可回收的催化剂易于循环至少五次,而没有任何催化活性的损失。使用1 H NMR和13 C NMR光谱确认获得的产物的结构。