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Ammonium Chloride → 7-[2-(2-Aminothiazol-4-yl)-2-carboxymethoxyiminoacetamido]-3-vinyl-3-cephem-4-carboxylic acid

HRID 905489
ノート
印刷プレビュー

反応式

HRID 905489 の反応式
[NH2:1][C:2]1[S:3][CH:4]=[C:5]([C:7](=[N:25][O:26][CH2:27][C:28]([O:30]CC(Cl)(Cl)Cl)=[O:29])[C:8]([NH:10][CH:11]2[C:23](=[O:24])[N:13]3[C:14]([C:20]([OH:22])=[O:21])=[C:15]([CH:18]=[CH2:19])[CH2:16][S:17][C@H:12]23)=[O:9])[N:6]=1.[Cl-].[NH4+]>O1CCCC1.O.[Zn]>[NH2:1][C:2]1[S:3][CH:4]=[C:5]([C:7](=[N:25][O:26][CH2:27][C:28]([OH:30])=[O:29])[C:8]([NH:10][CH:11]2[C:23](=[O:24])[N:13]3[C:14]([C:20]([OH:22])=[O:21])=[C:15]([CH:18]=[CH2:19])[CH2:16][S:17][C@H:12]23)=[O:9])[N:6]=1
参加物実験手順後処理出典と根拠反応ノート

参加物

6

反応物 2

HCID 25517Ammonium ChlorideHCID 1317133477-[2-(2-Aminothiazol-4-yl)-2-(2,2,2-trichloroethoxycarbonylmethoxyimino)acetamido]-3-vinyl-3-cephem-4-carboxylic acid

生成物 1

HCID 913233527-[2-(2-Aminothiazol-4-yl)-2-carboxymethoxyiminoacetamido]-3-vinyl-3-cephem-4-carboxylic acid収率 28.4%

試薬・触媒・溶媒 3

HCID 23994Zinc触媒HCID 962
Water
溶媒
HCID 8028Tetrahydrofuran溶媒

実験手順

To a solution of 7-[2-(2-aminothiazol-4-yl)-2-(2,2,2-trichloroethoxycarbonylmethoxyimino)acetamido]-3-vinyl-3-cephem-4-carboxylic acid (syn isomer) (0.5 g) in tetrahydrofuran (2.5 ml) were added zinc powder (0.5 g) and an aqueous ammonium chloride (0.3 g) in water (4 ml) at ambient temperature with stirring, and the stirring was continued at ambient temperature for 30 minutes. After the zinc powder was removed by filtration, the filtrate was adjusted to pH 2.3 with 10% hydrochloric acid and then extracted with ethyl acetate. The extract was washed with a saturated aqueous sodium chloride, followed by drying over magnesium sulfate. The solution was evaporated under reduced pressure, and the residue was triturated with diisopropyl ether to give 7-[2-(2-aminothiazol-4-yl)-2-carboxymethoxyiminoacetamido]-3-vinyl-3-cephem-4-carboxylic acid (syn isomer) (0.11 g).

後処理

  1. customAfter the zinc powder was removed by filtration
  2. extractionextracted with ethyl acetate
  3. washThe extract was washed with a saturated aqueous sodium chloride
  4. dry with materialby drying over magnesium sulfate
  5. customThe solution was evaporated under reduced pressure
  6. customthe residue was triturated with diisopropyl ether

出典と根拠

ORDレコード
ord-9ecca59befb94f11aa7485598cac2d51
出典データセット
uspto-grants-1983_12
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US04423213

反応ノート

読み込み中…

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