Chloroacetic anhydride → (S)-8-chloro-1-(5-chloromethyl-1,2,4-oxadiazol-3-yl)-11,12,13,13a-tetrahydro-9H-imidazo[1,5-a]pyrrolo[2,1-c][1,4]benzodiazepin-9-one

HRID 1378201ノート

反応式

HRID 1378201 の反応式
[Cl:1][C:2]1[C:7]2[C:8](=[O:23])[N:9]3[CH2:22][CH2:21][CH2:20][C@H:10]3[C:11]3[N:12]([CH:13]=[N:14][C:15]=3[C:16](=[N:18][OH:19])[NH2:17])[C:6]=2[CH:5]=[CH:4][CH:3]=1.[Cl:24][CH2:25][C:26](OC(=O)CCl)=O>CN(C)C=O>[Cl:1][C:2]1[C:7]2[C:8](=[O:23])[N:9]3[CH2:22][CH2:21][CH2:20][C@H:10]3[C:11]3[N:12]([CH:13]=[N:14][C:15]=3[C:16]3[N:17]=[C:26]([CH2:25][Cl:24])[O:19][N:18]=3)[C:6]=2[CH:5]=[CH:4][CH:3]=1

参加物

4

反応物 2

HCID 10946Chloroacetic anhydrideHCID 53703069(S)-8-chloro-11,12,13,13a-tetrahydro-9-oxo-9H-imidazo[1,5-a]pyrrolo[2,1-c][1,4]benzodiazepine-1-carboxamidoxime

生成物 1

HCID 54468676(S)-8-chloro-1-(5-chloromethyl-1,2,4-oxadiazol-3-yl)-11,12,13,13a-tetrahydro-9H-imidazo[1,5-a]pyrrolo[2,1-c][1,4]benzodiazepin-9-one収率 75.4%

試薬・触媒・溶媒 1

HCID 6228Dimethylformamide溶媒

実験手順

A suspension of 7.07 g (21.3 mmol) of (S)-8-chloro-9-oxo-11,12,13,13a-tetrahydro-9H-imidazo[1,5-a]pyrrolo[2,1-c][1,4]benzodiazepine-1-carboxamidoxime in 50 ml of N,N-dimethylformamide was treated with 4.0 g (23.4 mmol) of chloroacetic anhydride. The yellow solution obtained was stirred at 105° for 2 hrs. and then completely freed from the solvents. The oily product was chromatographed over silica gel with methylene chloride/methanol 9:1 as the eluent and the oily product obtained was recrystallized from ethyl acetate/ether. The mother liquor was concentrated, the residue was again chromatographed over silica gel with acetonitrile as the eluent and the additional portion of product obtained was recrystallized from ethyl acetate/ether. There were obtained a total of 6.27 g (75%) of (S)-8-chloro-1-(5-chloromethyl-1,2,4-oxadiazol-3-yl)-11,12,13,13a-tetrahydro-9H-imidazo[1,5-a]pyrrolo[2,1-c][1,4]benzodiazepin-9-one as white crystals; m.p. 184°-186° and [α]D20 =+36.1° (MeOH, c=1%).

後処理

  1. customThe yellow solution obtained
  2. customThe oily product was chromatographed over silica gel with methylene chloride/methanol 9:1 as the eluent
  3. customthe oily product obtained
  4. customwas recrystallized from ethyl acetate/ether
  5. concentrationThe mother liquor was concentrated
  6. customthe residue was again chromatographed over silica gel with acetonitrile as the eluent
  7. customthe additional portion of product obtained
  8. customwas recrystallized from ethyl acetate/ether

出典と根拠

ORDレコード
ord-f07d637f349747d09dc0314f5a50fe28
出典データセット
uspto-grants-1997_09
特許番号
US05665718

反応ノート

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