作者:Andrey V. Bogolubsky、Yurii S. Moroz、Pavel K. Mykhailiuk、Yurii V. Dmytriv、Sergey E. Pipko、Liudmyla N. Babichenko、Anzhelika I. Konovets、Andrey Tolmachev
DOI:10.1039/c4ra12425a
日期:——
and disubstituted semicarbazides was prepared in a one-pot two-step approach. The method includes formation of a carbamate from bis(2,2,2-trifluoroethyl)carbonate or 2,2,2-trifluoroethylchloroformate and a primary or secondary amine and subsequent interaction of the carbamate with hydrazine to result in a semicarbazide. The approach allowed to obtain 4-substituted semicarbazides on a large scale in
用一锅两步法制备了25种4-一元和二取代的氨基脲的多样化文库。该方法包括由碳酸双(2,2,2-三氟乙基)酯或氯甲酸2,2,2-三氟乙基酯与伯胺或仲胺形成氨基甲酸酯,以及随后使氨基甲酸酯与肼相互作用以生成氨基脲。该方法允许以高收率和高纯度大规模获得4-取代的氨基脲。