反应 #1904064

反应方程式

5-(5,5-dimethyl-2-oxo-1,2,3,5-tetrahydro-4,1-benzoxazepin-7-yl)-1H-pyrrole-2-carbonitrile

Lawesson's reagent

→

title compound

收率 118.4%

5-(5,5-Dimethyl-2-thioxo-1,2,3,5-tetrahydro-4,1-benzoxazepin-7-yl)-1H-pyrrole-2-carbonitrile

收率 118.4%

溶剂

toluene

THF

反应条件

后处理

1. 1
   workup.DISSOLUTIONto dissolve the starting material)
2. 2
   温度cooled to rt
3. 3
   浓缩concentrated
4. 4
   其他The residue was purified by a flash chromatography on silica gel column (hexane:THF/4:1)

实验过程

To a solution of 5-(5,5-dimethyl-2-oxo-1,2,3,5-tetrahydro-4,1-benzoxazepin-7-yl)-1H-pyrrole-2-carbonitrile (0.4 g, 1.4 mmol) in a mixture of toluene (20 mL) and THF (10 mL, help to dissolve the starting material) was added at rt under nitrogen the Lawesson's reagent (0.29 g, 0.71 mmol). The mixture was heated at 100° C. for 10 minutes, cooled to rt, and concentrated. The residue was purified by a flash chromatography on silica gel column (hexane:THF/4:1) to give the title compound as a yellowish solid (0.25 g, 60%). 1H-NMR (DMSO-d6) δ 12.66 (s, 1H), 11.96 (s, 1H), 7.69 (d, J=1.49 Hz, 1H), 7.64 (dd, J=1.48, 8.44 Hz, 1H), 7.35 (d, J=8.51 Hz, 1H), 7.01 (m, 1H), 6.79 (m, 1H), 4.49 (s, 2H), 1.60 (s, 6H); MS (FI) m/z 296 ([M−H]−, 100%)

来源