Tran T, Duong T, Luu XT. The novel and green synthesis of 6-amino-4-phenyl-2-thioxo-1,2,3,4-tetrahydropyrimidine-5-carbonitrile via the solvent-free biginelli multi-component reaction catalysed by Choline chloride/2ZnCl2. Science & Technology Development Journal: Natural Sciences [Internet]. 17Feb.2025 [cited 22Feb.2025];8(4):In press. Available from: https://stdjns.scienceandtechnology.com.vn/index.php/stdjns/article/view/1370