4-Substituted-3-alkyl-3,4-dihydro-2<i>H</i>-1,3-benzoxazin-2-ones II (1,2). Solvolytic transformations of urea and thiourea derivatives into 1-alkyldihydro-6-(2-hydroxyaryl)-1,3,5-triazine-2,4-(1<i>H</i>,3<i>H</i>) diones
作者:George Bobowski、John Shavel
DOI:10.1002/jhet.5570150723
日期:1978.10
3-benzoxazin-4-yl)ureas (II, Table I) and 3,4-dihydro-2-oxo-(3-substituted-2H-1,3-benzoxazin-4-yl)thioureas (Table II) was prepared by treating 3,4-dihydro-4-hydroxy-3-substituted-2H-1,3-benzoxazin-2-ones with ureas and thioureas, respectively. In the presence of alcoholic alkali these compounds underwent transacylation to dihydro-6-(2-hydroxyaryl)-1,3,5-triazine-2,4-(1H,2H)diones (Table III) and their
一系列3,4-二氢-2-氧-(3-取代的2 H -1,3-苯并恶嗪-4-基)脲(II,表I)和3,4-二氢-2-氧-((通过处理3,4-二氢-4-羟基-3-取代的2 H -1,3-苯并恶嗪-2制备3-取代的-2 H -1,3-苯并恶嗪-4-基)硫脲(表II)。-分别带有尿素和硫脲的化合物。在醇性碱的存在下,这些化合物进行转酰基化为二氢-6-(2-羟基芳基)-1,3,5-三嗪-2,4-(1 H,2 H)二酮(表III)和它们的4-硫代类似物(表IV)。