A Clean, Highly Efficient and One-Pot Green Synthesis of Aryl/Alkyl/Heteroaryl-Substituted Bis(6-amino-1,3-dimethyluracil-5-yl)methanes in Water
作者:Subrata Das、Ashim Jyoti Thakur
DOI:10.1002/ejoc.201001581
日期:2011.4
A highlyefficient green synthesis of aryl/alkyl/heteroaryl-substituted bis(6-amino-1,3-dimethyluracil-5-yl)methanes by the condensation of 6-amino-1,3-dimethyluracil with aldehydes (aromatic, aliphatic and heterocyclic) in water at room temperature is described. No dehydrating agent, heat, catalyst, surfactant or additive was used. The structures of the compounds were established by spectroscopic
Ceric ammonium nitrate (CAN): an efficient and eco-friendly catalyst for the one-pot synthesis of alkyl/aryl/heteroaryl-substituted bis(6-aminouracil-5-yl)methanes at room temperature
作者:Goutam Brahmachari、Bubun Banerjee
DOI:10.1039/c5ra04723d
日期:——
practical method for the one-pot synthesis of biologically relevant alkyl/aryl/heteroaryl-substituted bis(6-aminouracil-5-yl)methane scaffolds (3a–3u) has been developed using ceric ammonium nitrate (CAN) as a commercially available and eco-friendly catalyst via pseudo three-component condensation reaction between aldehydes and 6-aminouracils in aqueous ethanol at roomtemperature. The salient features of
Preparation, characterization and utilization of a novel dicationic molten salt as catalyst for the synthesis of bis(6-amino-1,3-dimethyluracil-5-yl)methanes
firstly, preparation and characterization of a novel dicationic molten salt, namely N , N , N ′, N ′-tetramethylethylenediaminium bisulfate ([TMEDA][HSO4]2), by 1H NMR, 13C NMR, FT-IR, mass, thermogravimetry, derivative thermogravimetry and differential thermal analysis data have been reported. Thereafter, utilization of [TMEDA][HSO4]2 as a recyclable catalyst for the solvent-free synthesis of bis(6-amino-1
摘要 在本研究中,首先,通过1 H NMR,13 C NMR制备并表征了一种新型的专用熔融盐,即 N , N , N ′, N′- 四甲基乙二硫酸氢铵([TMEDA] [HSO 4 ] 2)。已经报道了FT-IR,质量,热重分析,微分热重分析和差热分析数据。之后,利用[TMEDA] [HSO 4 ] 2作为可循环利用的催化剂,用于通过6-氨基-1,3-二甲基尿嘧啶(2当量)和芳醛(1的反应)无溶剂合成双(6-氨基-1,3-二甲基尿嘧啶-5-基)甲烷eq。)。 图形摘要
Synthesis, characterization and application of a novel nanorod-structured organic–inorganic hybrid material as an efficient catalyst for the preparation of aminouracil derivatives
作者:Abdolkarim Zare、Jaleh Atashrooz、Mohammad Mehdi Eskandari
DOI:10.1007/s11164-020-04104-z
日期:2020.5
Abstract In this work, a novel nanorod-structured organic–inorganic hybridmaterial namely nanorod-[SiO2-Pr-Im-SO3H][TFA] (N-[SPIS][TFA]) has been synthesized, and characterized by FT-IR, energy-dispersive X-ray spectroscopy, field emission scanning electron microscopy, thermal gravimetric analysis and X-ray diffraction analyses. Thereafter, it has been applied as an efficient, recyclable and dual-functional
An efficient and direct procedure for the synthesis of pyrimido[4,5-d]pyrimidine-2,4,7-trione derivatives has been described under microwave-assisted conditions. Reaction of 6-amino-1,3-dimethyluracil with aromatic aldehydes resulted in the formation of pyrido[2,3-d:6,5-d] dipyrimidine-2,4,6,8-tetrone derivatives.
已经描述了在微波辅助条件下合成嘧啶并[4,5 - d ]嘧啶-2,4,7-三酮衍生物的有效和直接的方法。6-氨基-1,3-二甲基尿嘧啶与芳族醛的反应导致吡啶并[2,3- d:6,5 - d ]二嘧啶-2,4,6,8-四氢呋喃衍生物的形成。