Bromine → 6-Bromo-8-fluoro-4,4-dimethyl-dihydro-benzo[d][1,3]oxazin-2-one

HRID 413163노트

반응식

HRID 413163 반응식
[F:1][C:2]1[CH:3]=[CH:4][CH2:5][CH:6]2[C:11]([CH3:13])([CH3:12])[O:10][C:9](=[O:14])[NH:8][C:7]=12.[Br:15]Br>C(O)(=O)C>[Br:15][C:4]1[CH2:5][CH:6]2[C:11]([CH3:12])([CH3:13])[O:10][C:9](=[O:14])[NH:8][C:7]2=[C:2]([F:1])[CH:3]=1

참가 물질

4

반응물 2

HCID 24408BromineHCID 68822414HCID 68822414, 화합물

생성물 1

HCID 688225046-Bromo-8-fluoro-4,4-dimethyl-dihydro-benzo[d][1,3]oxazin-2-one수율 84%

시약·촉매·용매 1

HCID 176Acetic Acid용매2회

실험 절차

To a solution of 8-fluoro-4,4-dimethyl-dihydro-benzo[d][1,3]oxazin-2-one (0.15 g, 0.77 mmol) in acetic acid (5 mL) was added dropwise a solution of bromine (0.37 g, 2.31 mmol) in acetic acid (5 mL) under nitrogen at rt. After stirred for 10 minutes, the mixture was concentrated and the residue obtained was purified by a silica gel column (hexane:ethyl acetate/4:1) to afford 6-bromo-8-fluoro-4,4-dimethyl-dihydro-benzo[d][1,3]oxazin-2-one as an off-white solid (0.176 g, 84%) which was used in next step without further purification.

후처리

  1. concentrationthe mixture was concentrated
  2. customthe residue obtained
  3. customwas purified by a silica gel column (hexane:ethyl acetate/4:1)

출처 및 근거

ORD 기록
ord-2c8c688bdb1746a4b47c814071d89545
출처 데이터셋
uspto-grants-2003_05
특허 번호
US06566358B2

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