Reactions of Ethyl 5-Methyl-4-(1,2,3-thiadiazol-4-yl)furan-2-carboxylate with Selected Bases
作者:Yu. O. Remizov、L. M. Pevzner、M. L. Petrov
DOI:10.1134/s1070363219100256
日期:2019.10
reactions of 5-methyl-4-(1,2,3-thiadiazol-4-yl)furan-2-carboxylic acid ethyl ester with some bases have been studied. The opening of 1,2,3-thiadiazole ring under the action of potassium tert-butylate in tetrahydrofuran in the presence of methyl iodide has led to the corresponding 4-methylsulfanylethynylfuran derivative. Under the action of potassium carbonate in DMF with an excess of primary amines or morpholine
研究了5-甲基-4-(1,2,3-噻二唑-4-基)呋喃-2-甲酸乙酯与某些碱的反应。在存在碘甲烷的情况下,在四氢呋喃中叔丁醇钾盐的作用下,1,2,3-噻二唑环的打开导致产生了相应的4-甲基磺酰间乙炔基呋喃衍生物。在DMF中碳酸钾与过量的伯胺或吗啉的作用下,起始噻二唑形成了相应的呋喃乙酸硫代酰胺。5-甲基-4-(1,2,3-噻二唑-4-基)呋喃-2-甲酸乙酯与水合肼的反应导致酯基发生肼解反应而未裂解1,2,3-噻二唑环。