Methyl iodide → (S)-5-(o-fluorophenyl)-1,3-dihydro-1,3-dimethyl-7-nitro-2H-1,4-benzodiazepin-2-one

HRID 848128ノート

反応式

HRID 848128 の反応式
[F:1][C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][C:3]=1[C:8]1[C:14]2[CH:15]=[C:16]([N+:19]([O-:21])=[O:20])[CH:17]=[CH:18][C:13]=2[NH:12][C:11](=[O:22])[C@H:10]([CH3:23])[N:9]=1.[C:24](=O)([O-])[O-].[K+].[K+].CI>CC(C)=O>[F:1][C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][C:3]=1[C:8]1[C:14]2[CH:15]=[C:16]([N+:19]([O-:21])=[O:20])[CH:17]=[CH:18][C:13]=2[N:12]([CH3:24])[C:11](=[O:22])[C@H:10]([CH3:23])[N:9]=1

参加物

5

反応物 3

HCID 6328Methyl iodideHCID 11430Potassium CarbonateHCID 54542710(S)-5-(o-fluorophenyl)-1,3-dihydro-3-methyl-7-nitro-2H-1,4-benzodiazepin-2-one

生成物 1

HCID 10404155(S)-5-(o-fluorophenyl)-1,3-dihydro-1,3-dimethyl-7-nitro-2H-1,4-benzodiazepin-2-one

試薬・触媒・溶媒 1

HCID 180Acetone溶媒

実験手順

57.5 g (0.18 M) of (S)-5-(o-fluorophenyl)-1,3-dihydro-3-methyl-7-nitro-2H-1,4-benzodiazepin-2-one are dissolved in 600 ml of absolute acetone. The solution is treated with 48 g of powdered potassium carbonate and 21 ml of methyl iodide and stirred at room temperature for 5 hours. The mixture is concentrated and the residue is treated with ice-water and extracted several times with methylene chloride. The methylene chloride solution is washed with water, dried over sodium sulphate, filtered and concentrated. The residue is crystallised from ether/petroleum ether and there is obtained (S)-5-(o-fluorophenyl)-1,3-dihydro-1,3-dimethyl-7-nitro-2H-1,4-benzodiazepin-2-one which melts at 118°-126° C. with decomposition; [α]25D =+563.1° (n methylene chloride; 1%).

後処理

  1. concentrationThe mixture is concentrated
  2. additionthe residue is treated with ice-water
  3. extractionextracted several times with methylene chloride
  4. washThe methylene chloride solution is washed with water
  5. dry with materialdried over sodium sulphate
  6. filtrationfiltered
  7. concentrationconcentrated
  8. customThe residue is crystallised from ether/petroleum ether

出典と根拠

ORDレコード
ord-f9e393b6a40d4d5291c42d9bcdfe38cd
出典データセット
uspto-grants-1981_10
特許番号
US04294758

反応ノート

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