Organocatalytic Green Approach Towards the Fabrication of Fused Benzo
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‐containing Heterocycles Facilitated by Ultrasonic Irradiation
作者:Ridaphun Nongrum、George Kupar Kharmawlong、Jims World Star Rani、Noimur Rahman、Arup Dutta、Rishanlang Nongkhlaw
DOI:10.1002/jhet.3680
日期:2019.10
transformations in organic synthesis offers a significant potential environmental benefit. This article reports the exploration of meglumine, a nontoxic and biodegradable amino sugar, as an organocatalyst for the synthesis of biologically active 1H‐dibenzo[b,e][1,4]diazepin‐1‐ones, highly regioselective benzimidazole derivatives and derivatives of quinoxalines. Operational simplicity, mild reaction conditions, shorter
Correction: Green synthesis of 1,4-benzodiazepines over La<sub>2</sub>O<sub>3</sub> and La(OH)<sub>3</sub> catalysts: possibility of Langmuir–Hinshelwood adsorption
Correction for ‘Green synthesis of 1,4-benzodiazepines over La2O3 and La(OH)3 catalysts: possibility of Langmuir–Hinshelwood adsorption’ by Archana Singh et al., RSC Adv., 2016, 6, 103455–103462.
Microwave-assisted synthesis of 11-substituted-3,3-dimethyl-2,3,4,5,10,11-hexahydrodibenzo[b,e][1,4]diazepin-1-one derivatives catalysed by silica supported fluoroboric acid as potent antioxidant and anxiolytic agents
benzodiazepines on the central nervous system, we have synthesized a novel series of benzodiazepine derivatives as antioxidant and anxiolytic agents. All the compounds were obtained in good yield by facile synthesis. To check their antioxidant potential, DPPH (2,2-diphenyl-1-picrylhydrazyl) free radical scavenging assay was performed. Among all the synthetics seven derivatives (SD-3, SD-5, SD-7, SD-14, SD-18
“On water” synthesis of dibenzo-[1,4]-diazepin-1-ones using <scp>l</scp>-proline as an organocatalyst and under catalyst-free conditions, and their evaluation as α-glucosidase inhibitors
Functionalized dibenzo-[1,4]-diazepin-1-ones are synthesized using the “on-water” concept in the presence of l-proline (organocatalyst; 20 mol%) and under catalyst free conditions (sealed tube) in an aqueous medium.
Microwave-Assisted Aqueous Reactions: An Efficient Route to Benzodiazepines
作者:Xiao-Tong Zhu、Jia-Yan Liu、Bo Jiang、Shu-Jiang Tu
DOI:10.1002/jhet.1988
日期:2015.1
three‐component reaction has been established for the synthesis of benzodiazepines. This reaction promoted by HOAc was conducted by using readily available and inexpensive starting materials in water under microwave irradiation. The present green synthesis shows fascinating characteristics such as the use of water as the reaction solution, concise one‐pot conditions, short reaction periods, easy purification