反応 #1687658

反応方程式

7-azaindole

dimethylammonium chloride

paraformaldehyde

→

3-(N,N-dimethylaminomethyl)-1H-pyrrolo[2,3-b]pyridine

収率 67.1%

溶媒

n-butanol

反応条件

後処理

1. 1
   温度The reaction was refluxed for 1 hour where
2. 2
   その他crystalized out
3. 3
   ろ過These were filtered
4. 4
   洗浄washed with butanol (10 mL)
5. 5
   その他The solid was dried in vacuo to a white crystalline solid massing 6.1 g
6. 6
   workup.DISSOLUTIONby dissolving in 20 mL water
7. 7
   workup.ADDITIONUpon the addition of ammonium hydroxide (aqueous, 30%) (2 mL) a white precipitate
8. 8
   その他formed
9. 9
   ろ過was filtered
10. 10
    洗浄washed with water (5 mL)
11. 11
    その他dried in vacuo

実験手順

7-azaindole (5.0 g, 17 mmole), dimethylammonium chloride (3.76 g), and paraformaldehyde (1.40 g) were dissolved in n-butanol (30 mL). The reaction was refluxed for 1 hour where upon cooling to room temperature fluffy white needles crystalized out. These were filtered and washed with butanol (10 mL). The solid was dried in vacuo to a white crystalline solid massing 6.1 g. A portion of this material (2.0 g) was converted to the free base by dissolving in 20 mL water. Upon the addition of ammonium hydroxide (aqueous, 30%) (2 mL) a white precipitate formed, was filtered, washed with water (5 mL), and dried in vacuo to yield 3-(N,N-dimethylaminomethyl)-1H-pyrrolo[2,3-b]pyridine (2.0 g, 27% yield). δH (300 MHz CDCl3) 2.27 (6H, s), 3.61 (2H, s), 7.09 (1H, dd, J=4.5 and 8.0), 7.28 (1H, s), 8.04 (1H, dd, J=1.2 and 8.1), 8.32 (1H, dd, J=1.2 and 4.7), ESMS 176 (MH+)

出典