Hydrochloric Acid → HCID 21249960、化合物

HRID 1531653ノート

反応式

HRID 1531653 の反応式
Cl.[BH4-].[Na+].[Br:4][C:5]1[C:6]([O:26][CH3:27])=[CH:7][C:8]2[C:14]([C:15]3[CH:20]=[CH:19][C:18]([N+:21]([O-:23])=[O:22])=[CH:17][CH:16]=3)=[N:13][N:12]=[C:11]([CH3:24])[CH2:10][C:9]=2[CH:25]=1>CO.O>[Br:4][C:5]1[C:6]([O:26][CH3:27])=[CH:7][C:8]2[C:14]([C:15]3[CH:20]=[CH:19][C:18]([N+:21]([O-:23])=[O:22])=[CH:17][CH:16]=3)=[N:13][NH:12][CH:11]([CH3:24])[CH2:10][C:9]=2[CH:25]=1

参加物

6

反応物 3

HCID 313Hydrochloric AcidHCID 4311764Sodium borohydrideHCID 21249973HCID 21249973、化合物

生成物 1

HCID 21249960HCID 21249960、化合物

試薬・触媒・溶媒 2

HCID 887Methanol溶媒HCID 962Water溶媒

実験手順

3.5 ml (43.2 mmol) of concentrated hydrochloric acid is first added, and then over about 10 minutes, 1.80 g (47.5 mmol) of sodium borohydride is added in portions to a suspension of 1.4 g (3.6 mmol) of 7-bromo-4-methyl-8-methoxy-1-(4-nitrophenyl)-5H-2,3-benzodiazepine (Example 3, Step C) in 60 ml of methanol. The suspension is stirred for another hour, and then diluted with water (60 ml). The crystalline material is suctioned off and washed with 50% aqueous methanol (3×50 ml). The 7-bromo-4-methyl-8-methoxy-1-(4-nitrophenyl)-4,5-dihydro-3H-2,3-benzodiazepine that is obtained as a crude product is further purified by suspension in 8 ml of hot ethanol. After suctioning-off, 1.23 g (88%) of chrome yellow crystals with a melting point of 172-174° C. is obtained.

後処理

  1. washwashed with 50% aqueous methanol (3×50 ml)

出典と根拠

ORDレコード
ord-d3cd79cfa23c4dbaabf64448cfb7e33c
出典データセット
uspto-grants-2001_03
特許番号
US06200970B1

反応ノート

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