Sodium Bicarbonate → 3-Methyl-5-[1-(4-[(5-nitro-2-furyl)methyl]aminophenyl)-4-piperidyl]-2,3-dihydro-1,3,4-oxadiazol-2-one

HRID 515431ノート

反応式

HRID 515431 の反応式
[CH3:1][N:2]1[N:6]=[C:5]([CH:7]2[CH2:12][CH2:11][N:10]([C:13]3[CH:18]=[CH:17][C:16](/[N:19]=[CH:20]/[C:21]4[O:22][C:23]([N+:26]([O-:28])=[O:27])=[CH:24][CH:25]=4)=[CH:15][CH:14]=3)[CH2:9][CH2:8]2)[O:4][C:3]1=[O:29].C([BH3-])#N.[Na+].C(=O)(O)[O-].[Na+]>CC(O)=O.CO>[CH3:1][N:2]1[N:6]=[C:5]([CH:7]2[CH2:8][CH2:9][N:10]([C:13]3[CH:14]=[CH:15][C:16]([NH:19][CH2:20][C:21]4[O:22][C:23]([N+:26]([O-:28])=[O:27])=[CH:24][CH:25]=4)=[CH:17][CH:18]=3)[CH2:11][CH2:12]2)[O:4][C:3]1=[O:29]

参加物

6

反応物 3

HCID 516892Sodium BicarbonateHCID 5003444Sodium cyanoborohydrideHCID 178481743HCID 178481743、化合物

生成物 1

HCID 716170383-Methyl-5-[1-(4-[(5-nitro-2-furyl)methyl]aminophenyl)-4-piperidyl]-2,3-dihydro-1,3,4-oxadiazol-2-one収率 86%

試薬・触媒・溶媒 2

HCID 176Acetic Acid触媒HCID 887Methanol溶媒

実験手順

3-Methyl-5-[1-(4-[(E)-1-(5-nitro-2-furyl)methylidene]aminophenyl)-4-piperidyl]-2,3-dihydro-1,3,4-oxadiazol-2-one (9b, 0.40 g, 1 mmol) on reduction with sodiumcyanoborohydride (0.12 g, 2 mmol) in the presence of catalytic amount of CH3COOH (3 drops) in methanol at 0° C. for 12 h. After completion of the reaction as indicated by TLC, the reaction mixture is neutralized with sodium bi carbonate and extracted into chloroform. The crude product thus obtained was purified by column chromatography using ethyl acetate-hexane (8:2) as eluant to obtain product 3-methyl-5-[1-(4-[(5-nitro-2-furyl)methyl]aminophenyl)-4-piperidyl]-2,3-dihydro-1,3,4-oxadiazol-2-one (10b, 343 mg, 86%).

後処理

  1. customAfter completion of the reaction
  2. extractionextracted into chloroform
  3. customThe crude product thus obtained
  4. customwas purified by column chromatography

出典と根拠

ORDレコード
ord-cef4322ad6c94228bd62808f1211d5fd
出典データセット
uspto-grants-2015_08
特許番号
US09108960B2

反応ノート

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