Triethylamine → tert-Butyl 6-(4-oxo-4H-1,3-benzothiazin-2-yl)-2-pyridinecarboxylate
反応式
[C:1]([C:3]1[N:8]=[C:7]([C:9]([O:11][C:12]([CH3:15])([CH3:14])[CH3:13])=[O:10])[CH:6]=[CH:5][CH:4]=1)#[N:2].[C:16](OC)(=[O:24])[C:17]1[C:18](=[CH:20][CH:21]=[CH:22][CH:23]=1)[SH:19].C(N(CC)CC)C>C1(C)C=CC=CC=1>[O:24]=[C:16]1[C:17]2[CH:23]=[CH:22][CH:21]=[CH:20][C:18]=2[S:19][C:1]([C:3]2[N:8]=[C:7]([C:9]([O:11][C:12]([CH3:15])([CH3:14])[CH3:13])=[O:10])[CH:6]=[CH:5][CH:4]=2)=[N:2]1参加物
5
実験手順
A mixture of tert-butyl 6-cyano-2-pyridinecarboxylate (1.1 g, 5.3 mmol), methyl thiosalicylate (1.8 g, 10.7 mmol), triethylamine (2.0 ml, 14.3 mmol) and toluene (4 ml) was refluxed for 12 hrs. After cooling, the precipitated crystals were collected by filtration, recrystallized from tetrahydrofuran-hexane to give the titled compound (1.3 g, 70%).