低熔点草酸/脯氨酸混合物作为双重溶剂/催化剂,可在微波辐射下有效合成13-芳基-13 H-苯并[ g ]苯并噻唑并[2,3 - b ]丁唑啉-5,4-二酮
摘要:
草酸和脯氨酸基深共熔溶剂(DES)已被确定为一锅合成13-芳基-13 H-苯并[ g ]苯并噻唑并[2,3- b ]喹唑啉-的有效催化剂和环境友好的反应介质在微波辐射下,芳香醛,2-氨基苯并噻唑和2-羟基-1,4-萘醌的三组分反应生成5,14-二酮。报告的方法显示出显着的优势,例如易于后处理,环境友好的过程,较短的反应时间,优异的收率,一锅多组分反应,无色谱法纯化,DES的回收和再利用。
本发明属于医药化工领域,具体的公开了一种医药中间体苯并噻唑[2,3‑ b ]喹唑啉二酮衍生物的制备方法,该制备方法包括以下步骤:(1)向三口烧瓶中首先加入混合溶剂,接着再加入芳香醛、2‑羟基‑1,4‑萘醌和2‑氨基苯并噻唑,最后加入酸性离子液体催化剂形成反应液;(2)加热反应液至预设温度,保持此预设温度反应至原料点消失;(3)反应液自然冷却至室温,随后将冷却析出的固体碾碎,静置后进行抽滤得到滤渣和滤液;(4)滤渣用蒸馏水洗涤,真空干燥得到苯并噻唑[2,3‑ b ]喹唑啉二酮衍生物。采用含有磺酸基的酸性离子液体作为均相酸性催化剂,它可以循环使用多次、易与产物分离、催化活性强和易生物降解,可以有效地缩短反应所需要的时间。
Synthesis and antiproliferative evaluation of 13-aryl-13H-benzo[g]benzothiazolo [2,3-b]quinazoline-5,14-diones
作者:Liqiang Wu、Chong Zhang、Weilin Li
DOI:10.1016/j.bmcl.2014.02.018
日期:2014.3
A simple synthesis of novel 13-aryl-13H-benzo[g] benzothiazolo [2,3-b] quinazoline-5,14-dione derivatives was accomplished in excellent yields via the reaction of 2-aminobenzothiazole, aromatic aldehydes and 2-hydroxy-1,4-naphthoquinone in the presence of amberlyst-15. The antiproliferative activities of all the synthesized compounds were assessed on two different human cancer cell lines (HepG2 and Hela), and the results showed that most of the new compounds showed good to potent cytotoxic activities. (C) 2014 Elsevier Ltd. All rights reserved.
Low melting oxalic acid/proline mixture as dual solvent/catalyst for efficient synthesis of 13-aryl-13 H -benzo[ g ]benzothiazolo[2,3- b ]buinazoline-5,4-diones under microwave irradiation
作者:Cui-Ting Ma、Peng Liu、Wei Wu、Zhan-Hui Zhang
DOI:10.1016/j.molliq.2017.07.060
日期:2017.9
Oxalic acid and proline based deep eutectic solvent (DES) has been identified as an effective catalyst and environmentally benign reaction medium for one-pot synthesis of 13-aryl-13H-benzo[g]benzothiazolo[2,3-b]quinazoline-5,14-diones via three-component reaction of aromaticaldehydes, 2-aminobenzothiazole and 2-hydroxy-1,4-naphthoquinone undermicrowaveirradiation. The reported approach shows significant
草酸和脯氨酸基深共熔溶剂(DES)已被确定为一锅合成13-芳基-13 H-苯并[ g ]苯并噻唑并[2,3- b ]喹唑啉-的有效催化剂和环境友好的反应介质在微波辐射下,芳香醛,2-氨基苯并噻唑和2-羟基-1,4-萘醌的三组分反应生成5,14-二酮。报告的方法显示出显着的优势,例如易于后处理,环境友好的过程,较短的反应时间,优异的收率,一锅多组分反应,无色谱法纯化,DES的回收和再利用。