The synthesis and transformations of 3-ethoxycarbonyl-2-isothiocyanatopyridine. Pyrido[2,3-<i>d</i>]pyrimidines and some azolopyrido[2,3-<i>d</i>]pyrimidines
作者:Uroš Urleb、Branko Stanovnik、Miha Tišler
DOI:10.1002/jhet.5570270331
日期:1990.3
converted into thiouretanes 3 and 4, 1,4-disubstituted thiosemicarbazide 6, thioamide 8, and thioureas 15 and 18. The compounds 2 and 3 were converted into bicyclic pyrido[2,3-d]pyrimidines 5, 9, 10, 11, 12, 16, and 17, and tricyclic azolopyrido[2,3-d]pyrimidines 13 and 14.
3-乙氧羰基-2-异硫氰基(2),由2-氨基-3- ethoxycarbonylpyridine(制备1由硫光气法),被转换成thiouretanes 3和4,1,4-二取代的氨基硫脲6,硫代酰胺8,和硫脲15和18。化合物2和3被转换成的双环吡啶并[2,3- d ]嘧啶5,9,10,11,12,16,和17,和三环azolopyrido [2,3- d ]嘧啶13和14。