Potassium Iodide → HCID 23081539、化合物

HRID 856281ノート

反応式

HRID 856281 の反応式
CS(O[CH2:6][CH2:7][CH2:8][C:9]1([CH3:20])[O:13][C:12]2=[N:14][C:15]([N+:17]([O-:19])=[O:18])=[CH:16][N:11]2[CH2:10]1)(=O)=O.[N:21]1([C:27]([O:29][C:30]([CH3:33])([CH3:32])[CH3:31])=[O:28])[CH2:26][CH2:25][NH:24][CH2:23][CH2:22]1.C(N(CC)CC)C.[I-].[K+]>CN(C=O)C>[CH3:20][C:9]1([CH2:8][CH2:7][CH2:6][N:24]2[CH2:23][CH2:22][N:21]([C:27]([O:29][C:30]([CH3:33])([CH3:32])[CH3:31])=[O:28])[CH2:26][CH2:25]2)[O:13][C:12]2=[N:14][C:15]([N+:17]([O-:19])=[O:18])=[CH:16][N:11]2[CH2:10]1

参加物

6

反応物 4

HCID 4875Potassium IodideHCID 8471TriethylamineHCID 143452tert-Butyl piperazine-1-carboxylateHCID 23081120HCID 23081120、化合物

生成物 1

HCID 23081539HCID 23081539、化合物収率 73%

試薬・触媒・溶媒 1

HCID 6228Dimethylformamide溶媒

反応条件

温度
60 °C

実験手順

A mixture of 3-(2-methyl-6-nitro-2,3-dihydroimidazo[2,1-b]oxazol-2-yl)propyl methane-sulfonate (2 g, 6.6 mmol), tert-butyl piperazine-1-carboxylate (1.4 g, 7.5 mmol), triethylamine (1.3 g, 12.85 mmol), potassium iodide (1.8 g, 10.8 mmol) and DMF (15 ml) was stirred at 60° C. overnight. The reaction mixture was allowed to return to room temperature and then added water, and the resulting solution was extracted with ethyl acetate three times. The organic phases were combined, washed with water twice and then with a saturated saline solution, dried over sodium sulfate and then filtered. The filtrate was concentrated under reduced pressure, and the residue was purified by silica gel column chromatography (methylene chloride/methanol=20/1) to afford tert-butyl 4-[3-(2-methyl-6-nitro-2,3-dihydroimidazo[2,1-b]oxazol-2-yl)propyl]piperazine-1-carboxylate (1.9 g, yield 73%) as a white powder.

後処理

  1. customto return to room temperature
  2. extractionadded water, and the resulting solution was extracted with ethyl acetate three times
  3. washwashed with water twice
  4. dry with materialwith a saturated saline solution, dried over sodium sulfate
  5. filtrationfiltered
  6. concentrationThe filtrate was concentrated under reduced pressure
  7. customthe residue was purified by silica gel column chromatography (methylene chloride/methanol=20/1)

出典と根拠

ORDレコード
ord-bb8de93a08e346ec8cbdcf1a695f6c8d
出典データセット
uspto-grants-2007_08
特許番号
US07262212B2

反応ノート

読み込み中…