Clonazepam → 11b-(2-chlorophenyl)-10-nitro-2,3,5,11b-tetrahydrooxazolo[3,2-d][1,4]benzodiazepin-6(7H)-one

HRID 597631

反応式

HRID 597631 の反応式
[Cl: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])[CH2:10][N:9]=1.[CH2:23]1[O:25][CH2:24]1.[OH-].[NH4+]>C(Cl)CCl>[Cl:1][C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][C:3]=1[C:8]12[O:25][CH2:24][CH2:23][N:9]1[CH2:10][C:11](=[O:22])[NH:12][C:13]1[CH:18]=[CH:17][C:16]([N+:19]([O-:21])=[O:20])=[CH:15][C:14]=12

参加物

5

実験手順

A solution of 5.2 g (0.02 M) of stannic chloride in 60 ml of dry ethylene dichloride under nitrogen was treated with 2.9 g (0.0091 M) of 5-(2-chlorophenyl)-1,3-dihydro-7-nitro-2H-1,4-benzodiazepin-2-one. The reaction was cooled in an ice bath, and 2.6 g (0.06 M) of ethylene oxide in 10 ml of ethylene dichloride was added with stirring over an 8 min period. After 18 hr at room temperature, the solution was made basic with concentrated ammonium hydroxide and filtered. The filtrates were washed with a saturated solution of brine, dried over anhydrous sodium sulfate and evaporated to dryness. The residue was crystallized from a mixture of dichloromethane, methanol and petroleum ether to give the above named product as white rods, melting at 201°-203°.

後処理

  1. temperatureThe reaction was cooled in an ice bath
  2. waitAfter 18 hr at room temperature
  3. filtrationfiltered
  4. washThe filtrates were washed with a saturated solution of brine
  5. dry with materialdried over anhydrous sodium sulfate
  6. customevaporated to dryness
  7. customThe residue was crystallized from a mixture of dichloromethane, methanol and petroleum ether
  8. customto give the above named product as white rods, melting at 201°-203°

出典と根拠

ORDレコード
ord-d46a3b1e8fd14277a3e86692e27df8d4
出典データセット
uspto-grants-1977_03
特許番号
US04014916

関連ノート

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