Study on synthesis of some substituted N-propargyl isatins by propargylation reaction of corresponding isatins using potassium carbonate as base under ultrasound- and microwave-assisted conditions
作者:Nguyen Minh Tri、Nguyen Dinh Thanh、Luong Ngoc Ha、Dang Thi Tuyet Anh、Vu Ngoc Toan、Nguyen Thi Kim Giang
DOI:10.1007/s11696-021-01697-6
日期:——
Substituted N-propargyl isatins were synthesized by SN2 reaction of corresponding substituted isatins with propargyl bromide in the presence of anhydrous K2CO3 as base. We reported about study on systematically synthesis of these compounds using heating procedures under different reaction conditions, including microwave-assisted heating conditions at power of 100 W (Procedure A), conventional heating
在无水碳酸钾为碱的条件下,通过相应的取代靛红与炔丙基溴进行SN2反应,合成了取代的N-炔丙基靛红。我们报道了在不同反应条件下使用加热程序系统合成这些化合物的研究,包括功率为 100 W 的微波辅助加热条件(程序 A),在乙腈中 50 °C 水浴中的常规加热条件(程序 B) ,以及在 DMF 中 50 °C 的水浴中的常规加热条件(程序 C)。根据对反应条件的研究推导出最佳工艺A。几乎所有取代的 N-炔丙基靛红都是新的,除了 R 为 H、5-Me、5-Cl 和 5-Br 取代基的化合物。所得化合物的结构经现代光谱学方法证实。