作者:Antonín Klásek、Jirí Polis、Vladimír Mrkvička、Janez Košmrlj
DOI:10.1002/jhet.5570390632
日期:2002.11
4-Hydroxy-1H-quinolin-2-ones (1) react with thiocyanogen in acetic acid to the corresponding 3-thiocyanato-1H,3H-quinoline-2,4-diones (2) in good yields. In some cases, 3-bromo-1H,3H-quinoline-2,4-diones (4) were isolated as minor reaction products. Compounds 2 are very reactive towards nucleophiles and easily hydrolyze to the corresponding 4-hydroxy-1H-quinoline-2-ones (1).
4-Hydroxy-1 H -quinolin-2-ones(1)在乙酸中与硫氰酸根反应生成相应的3-thiocyanato-1 H,3 H -quinoline-2,4-diones(2),产率高。在某些情况下,3-溴1 H,3 H-喹啉-2,4-二酮(4)被分离为次要反应产物。化合物2对亲核试剂具有很高的反应性,并容易水解为相应的4-羟基-1 H-喹啉-2-酮(1)。