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

HRID 569434
ノート
印刷プレビュー

反応式

HRID 569434 の反応式
C([O:14][C:15]([CH2:17][O:18][N:19]=[C:20]([C:51]1[N:52]=[C:53]([NH2:56])[S:54][CH:55]=1)[C:21]([NH:23][CH:24]1[C:49](=[O:50])[N:26]2[C:27]([C:33]([O:35]C(C3C=CC=CC=3)C3C=CC=CC=3)=[O:34])=[C:28]([CH:31]=[CH2:32])[CH2:29][S:30][C@H:25]12)=[O:22])=[O:16])(C1C=CC=CC=1)C1C=CC=CC=1.Cl.C(OC(C)C)(C)C>C(O)=O>[C:15]([CH2:17][O:18][N:19]=[C:20]([C:51]1[N:52]=[C:53]([NH2:56])[S:54][CH:55]=1)[C:21]([NH:23][CH:24]1[C:49](=[O:50])[N:26]2[C:27]([C:33]([OH:35])=[O:34])=[C:28]([CH:31]=[CH2:32])[CH2:29][S:30][C@H:25]12)=[O:22])([OH:16])=[O:14]
参加物実験手順後処理出典と根拠反応ノート

参加物

5

反応物 3

HCID 313Hydrochloric AcidHCID 7914Diisopropyl EtherHCID 131713343Benzhydryl 7-[2-benzhydryloxycarbonylmethoxyimino-2-(2-aminothiazol-4-yl)acetamido]-3-vinyl-3-cephem-4-carboxylate

生成物 1

HCID 913233527-[2-(2-Aminothiazol-4-yl)-2-carboxymethoxyiminoacetamido]-3-vinyl-3-cephem-4-carboxylic acid収率 86.7%

試薬・触媒・溶媒 1

HCID 284
Formic Acid
溶媒

実験手順

To a solution of benzhydryl 7-[2-benzhydryloxycarbonylmethoxyimino-2-(2-aminothiazol-4-yl)acetamido]-3-vinyl-3-cephem-4-carboxylate (syn isomer) (3 g) in formic acid (12 ml) was added 35% hydrochloric acid (1 ml) at 0° C. After stirring at ambient temperature for an hour, the reaction mixture was poured into diisopropyl ether. The precipitates were collected by filtration, washed with diisopropyl ether and then dissolved in water (15 ml). The aqueous solution was adjusted to pH 3.5 with 5% aqueous sodium bicarbonate. The precipitates were collected by filtration and dried to give 7-[2-carboxymethoxyimino-2-(2-aminothiazol-4-yl)acetamido]-3-vinyl-3-cephem-4-carboxylic acid (syn isomer) (1.5 g).

後処理

  1. filtrationThe precipitates were collected by filtration
  2. washwashed with diisopropyl ether
  3. dissolutiondissolved in water (15 ml)
  4. filtrationThe precipitates were collected by filtration
  5. customdried

出典と根拠

ORDレコード
ord-63dfc45206334c648bf31bea1fd9f9bd
出典データセット
uspto-grants-1988_03
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US04731443

反応ノート

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