Azidotrimethylsilane → ethyl 2-(9-azido-7-bromo-4-fluoro-2-methoxy-9H-xanthen-9-yl)acetate

HRID 455613노트

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HRID 455613 반응식
[Br:1][C:2]1[CH:15]=[C:14]2[C:5]([O:6][C:7]3[C:8]([F:25])=[CH:9][C:10]([O:23][CH3:24])=[CH:11][C:12]=3[C:13]2([CH2:17][C:18]([O:20][CH2:21][CH3:22])=[O:19])O)=[CH:4][CH:3]=1.[N:26]([Si](C)(C)C)=[N+:27]=[N-:28].C([O+]([B-](F)(F)F)CC)C>C1(C)C=CC=CC=1>[N:26]([C:13]1([CH2:17][C:18]([O:20][CH2:21][CH3:22])=[O:19])[C:12]2[CH:11]=[C:10]([O:23][CH3:24])[CH:9]=[C:8]([F:25])[C:7]=2[O:6][C:5]2[C:14]1=[CH:15][C:2]([Br:1])=[CH:3][CH:4]=2)=[N+:27]=[N-:28]

참가 물질

5

반응물 3

HCID 78378AzidotrimethylsilaneHCID 67383096ethyl 2-(7-bromo-4-fluoro-9-hydroxy-2-methoxy-9H-xanthen-9-yl)acetateHCID 178467671HCID 178467671, 화합물

생성물 1

HCID 86658377ethyl 2-(9-azido-7-bromo-4-fluoro-2-methoxy-9H-xanthen-9-yl)acetate수율 94.2%

시약·촉매·용매 1

HCID 1140Toluene용매

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온도
0 °C

실험 절차

To a solution of ethyl 2-(7-bromo-4-fluoro-9-hydroxy-2-methoxy-9H-xanthen-9-yl)acetate (1.0 g, 2.432 mmol) in toluene (25 ml) was added azidotrimethylsilane (0.560 g, 4.86 mmol). The solution was cooled to 0° C. and (diethyloxonio)trifluoroborate (0.308 ml, 2.432 mmol) was added drop wise. The mixture was stirred overnight at RT. The solution was quenched with MeOH (10 ml) and diluted with EtOAc. The organic phase was separated, washed with saturated aqueous sodium bicarbonate solution and brine, and then concentrated to afford crude ethyl 2-(9-azido-7-bromo-4-fluoro-2-methoxy-9H-xanthen-9-yl)acetate (1 g, 2.292 mmol, 94% yield).

후처리

  1. customThe solution was quenched with MeOH (10 ml)
  2. additiondiluted with EtOAc
  3. customThe organic phase was separated
  4. washwashed with saturated aqueous sodium bicarbonate solution and brine
  5. concentrationconcentrated

출처 및 근거

ORD 기록
ord-bca0c6b09682426fb96c40b6b3296e02
출처 데이터셋
uspto-grants-2013_07
특허 번호
US08497264B2

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