Deep eutectic solvent-mediated expedient multicomponent synthesis of oxazine scaffolds
作者:Ankita Chaudhary、Garima Khanna、Haritma Chopra、Ritu Gaba
DOI:10.1007/s11164-022-04674-0
日期:2022.5
the synthesis of 1,3-oxazine derivatives, viz. 7-aryl-7,8-dihydro-6H-[1,3]dioxolo[4′,5′:4,5]benzo[1,2-e][1,3]oxazines and 3-aryl-3,4-dihydro-2H- naphtho[2,3-e][1,3]oxazine-5,10-diones, involving one-pot multicomponent condensation reaction of various amines and formaldehyde with sesamol/2-hydroxy-1,4-naphthoquinone, respectively, catalyzed by a choline chloride–oxalic acid deep eutectic solvent has
一种用于合成 1,3-恶嗪衍生物的简单、高效且环保的方案,即。7-aryl-7,8-dihydro-6 H -[1,3]dioxolo[4',5':4,5]benzo[1,2 -e ][1,3]oxazines 和 3-aryl-3 ,4-dihydro-2 H - 萘并[2,3 - e ][1,3]oxazine-5,10-diones,涉及各种胺和甲醛与芝麻酚/2-羟基-1的一锅多组分缩合反应, 4-萘醌分别由氯化胆碱-草酸低共熔溶剂催化。该方法具有反应条件温和、操作步骤简单、催化剂可回收、可生物降解、反应时间短、目标产物收率高等优点。