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

HRID 50717

反応式

HRID 50717 の反応式
[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

参加物

4

反応物 2

HCID 24408BromineHCID 68822414HCID 68822414、化合物

生成物 1

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

試薬・触媒・溶媒 1

HCID 176Acetic Acid溶媒2 回

実験手順

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 stirring 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.

後処理

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

出典と根拠

ORDレコード
ord-ac05475672bd49e3902ac21299b81591
出典データセット
uspto-grants-2004_03
特許番号
US06713478B2

関連ノート

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