Sodium Hydroxide → (2Z)-2-(1-methyl-2-oxopyrrolidin-3-yl)oxyimino-2-[2-(tritylamino)-1,3-thiazol-4-yl]acetic acid

HRID 1252323ノート

反応式

HRID 1252323 の反応式
[C:1]([NH:20][C:21]1[S:22][CH:23]=[C:24](/[C:26](=[N:32]/[O:33][CH:34]2[CH2:38][CH2:37][N:36]([CH3:39])[C:35]2=[O:40])/[C:27]([O:29]CC)=[O:28])[N:25]=1)([C:14]1[CH:19]=[CH:18][CH:17]=[CH:16][CH:15]=1)([C:8]1[CH:13]=[CH:12][CH:11]=[CH:10][CH:9]=1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[OH-].[Na+]>CO>[C:1]([NH:20][C:21]1[S:22][CH:23]=[C:24](/[C:26](=[N:32]/[O:33][CH:34]2[CH2:38][CH2:37][N:36]([CH3:39])[C:35]2=[O:40])/[C:27]([OH:29])=[O:28])[N:25]=1)([C:14]1[CH:15]=[CH:16][CH:17]=[CH:18][CH:19]=1)([C:8]1[CH:13]=[CH:12][CH:11]=[CH:10][CH:9]=1)[C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1

参加物

4

反応物 2

HCID 14798Sodium HydroxideHCID 13536859ethyl (2Z)-2-(1-methyl-2-oxopyrrolidin-3-yl)oxyimino-2-[2-(tritylamino)-1,3-thiazol-4-yl]acetate

生成物 1

HCID 13335558(2Z)-2-(1-methyl-2-oxopyrrolidin-3-yl)oxyimino-2-[2-(tritylamino)-1,3-thiazol-4-yl]acetic acid収率 83.9%

試薬・触媒・溶媒 1

HCID 887Methanol溶媒

実験手順

2.7 g of ethyl (Z)-2-(2-tritylaminothiazol-4-yl)-2-[(1-methyl-2-pyrrolidon-3-yl)oxyimino)acetate are suspended in 27 ml of methanol, and 4.9 ml of 2N sodium hydroxide solution are added thereto. The mixture is refluxed for 20 minutes under heating. After cooling, the mixture is concentrated under reduced pressure to remove methanol. The residue is adjusted to pH 3 with 2N hydrochloric acid and extracted with ethyl acetate. The extract is dried and evaporated under reduced pressure to remove solvent. Then, the residue thus obtained is crystallized with ether and collected by filtration. 2.15 g of (Z)-2-(2-tritylaminothiazol-4-yl)-2-[(1-methyl-2-pyrrolidon-3-yl)oxyimino]acetic acid are obtained.

後処理

  1. temperatureThe mixture is refluxed for 20 minutes
  2. temperatureunder heating
  3. temperatureAfter cooling
  4. concentrationthe mixture is concentrated under reduced pressure
  5. customto remove methanol
  6. extractionextracted with ethyl acetate
  7. customThe extract is dried
  8. customevaporated under reduced pressure
  9. customto remove solvent
  10. customThen, the residue thus obtained
  11. customis crystallized with ether
  12. filtrationcollected by filtration

出典と根拠

ORDレコード
ord-612472f0d82747688247bf917f950a67
出典データセット
uspto-grants-1988_05
特許番号
US04742174

反応ノート

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