Multicomponent synthesis of spiro 1,3,4‐thiadiazolines with anticancer activity by using deep eutectic solvent under microwave irradiation
作者:Aleff Castro、Isadora Maria Gouveia Andrade、Maísa Cavalcanti Coelho、Daniel Pereira da Costa、Dayse das Neves Moreira、Rachel Azevedo Maia、Gesiane da Silva Lima、Gabriel Franco dos Santos、Boniek Gontijo Vaz、Gardênia Carmen Gadelha Militão、Paulo Bruno Norberto da Silva、Mário Luiz Araujo de Almeida Vasconcellos、Claudio Gabriel Lima‐Junior
DOI:10.1002/jhet.4591
日期:2023.3
This work describes a simple and efficient alternative method for obtaining 1,3,4-thiadialzolinic spirocompounds, combining the use of deep eutectic solvents (DES) with microwave irradiation in a one-pot process. A series of DES based on different acids was explored as a solvent in a three-component reaction including isatin derivatives (monomeric and dimeric), thiosemicarbazide, and acetic anhydride
这项工作描述了一种获得 1,3,4-噻二唑啉螺环化合物的简单有效的替代方法,该方法将低共熔溶剂 (DES) 的使用与微波辐射在一锅法中相结合。探索了一系列基于不同酸的 DES 作为三组分反应中的溶剂,包括靛红衍生物(单体和二聚体)、氨基硫脲和乙酸酐。氯化胆碱和草酸 (1:1) 在评估的其他溶剂中表现出更好的结果,当应用于建议系列的其他化合物时,收率高达 79%。对于大多数单体化合物,收率非常接近或高于文献中报道的两步合成收率。这些结果证明了使用一锅合成作为更快、更清洁、