2-Amino-6-methyl-2,4,6-cycloheptatrien-1-one → 4-hydroxy-2-methyl-N-(6-methyl-1-oxo-2,4,6-cycloheptatrien-2-yl)-2H-1,2-benzothiazine-3-carboxamide 1,1-dioxide
反応式
[OH:1][C:2]1[C:7]2[CH:8]=[CH:9][CH:10]=[CH:11][C:6]=2[S:5](=[O:13])(=[O:12])[N:4]([CH3:14])[C:3]=1[C:15]([O:17]C)=O.[NH2:19][C:20]1[C:21](=[O:28])[CH:22]=[C:23]([CH3:27])[CH:24]=[CH:25][CH:26]=1>C1(C)C(C)=CC=CC=1>[OH:1][C:2]1[C:7]2[CH:8]=[CH:9][CH:10]=[CH:11][C:6]=2[S:5](=[O:12])(=[O:13])[N:4]([CH3:14])[C:3]=1[C:15]([NH:19][C:20]1[C:21](=[O:28])[CH:22]=[C:23]([CH3:27])[CH:24]=[CH:25][CH:26]=1)=[O:17]参加物
4
反応物 2
生成物 1
試薬・触媒・溶媒 1
実験手順
A solution of methyl 4-hydroxy-2-methyl-2H-1,2-benzothiazine-3-carboxylate 1,1-dioxide (1.2 g) and 2-amino-6-methyl-2,4,6-cycloheptatrien-1-one (0.7 g) in xylene (21 ml) is refluxed for 8 hours. The reaction mixture is then allowed to stand at room temperature for 2 days. The crystals that have separated out are collected by filtration, washed with toluene and recrystallized from dimethylformamide to give 4-hydroxy-2-methyl-N-(6-methyl-1-oxo-2,4,6-cycloheptatrien-2-yl)-2H-1,2-benzothiazine-3-carboxamide 1,1-dioxide (0.8 g), m.p. 276°-280° C.