Synthesis of Bridgehead Nitrogen Heterocycles on a Solid Surface
作者:Shashikanth Ponnala、S. T. V. S. Kiran Kumar、Bashir A. Bhat、Devi Prasad Sahu
DOI:10.1081/scc-200051674
日期:2005.4.1
Abstract Bridgeheadnitrogenheterocycles were synthesized from heteroaromatic amidines and cyclic or acyclic α‐bromoketones under solvent‐free conditions at room temperature on a solid surface in excellent yields, which are higher than those obtained with hitherto‐known methods of syntheses. #CDRI Communication No. 6545.
Convenient and highly efficient microwave-assisted synthesis of 2-Arylimidazo[1,2-a]pyrimidine-3-carbaldehydes in glycerol
作者:Hani Y. Saeed、Maqdoom Farooqui、Ayesha N. Durrani
DOI:10.1080/00397911.2022.2158746
日期:2023.1.17
Abstract A simple and highly efficient method adopted for the synthesis of 2-Arylimidazo[1,2-a]pyrimidine-3-carbaldehyde from reaction of 2-phenylimidazo[1,2-a]pyrimidines, with (Vilsmeier–Haack reagent) in the presence of glycerol as a green reaction medium under microwave irradiation at 400 watt, at 90 °C. Mild reaction conditions, high yield, short reaction time, a clean reaction profile, avoiding
摘要 2-苯基咪唑并[1,2-a]嘧啶与(Vilsmeier-Haack试剂)反应合成2-芳基咪唑并[1,2-a]嘧啶-3-甲醛的简单高效方法在 400 瓦、90 °C 的微波辐射下,甘油作为绿色反应介质存在。反应条件温和、收率高、反应时间短、反应曲线干净、避免使用有毒催化剂、有害有机溶剂、废料少是以往采用的方法的优点。