Acetic Anhydride → Ethyl 2-(6-(5-acetamido-1,3,4-thiadiazol-2-yloxy)-1-hydroxy-4-methyl-1,3-dihydrobenzo[c][1,2]oxaborol-3-yl)acetate

HRID 1798299ノート

反応式

HRID 1798299 の反応式
[NH2:1][C:2]1[S:6][C:5]([O:7][C:8]2[CH:9]=[C:10]([CH3:24])[C:11]3[CH:15]([CH2:16][C:17]([O:19][CH2:20][CH3:21])=[O:18])[O:14][B:13]([OH:22])[C:12]=3[CH:23]=2)=[N:4][N:3]=1.CCN(CC)CC.[C:32](OC(=O)C)(=[O:34])[CH3:33]>C(Cl)Cl>[C:32]([NH:1][C:2]1[S:6][C:5]([O:7][C:8]2[CH:9]=[C:10]([CH3:24])[C:11]3[CH:15]([CH2:16][C:17]([O:19][CH2:20][CH3:21])=[O:18])[O:14][B:13]([OH:22])[C:12]=3[CH:23]=2)=[N:4][N:3]=1)(=[O:34])[CH3:33]

参加物

5

反応物 3

HCID 7918Acetic AnhydrideHCID 8471TriethylamineHCID 58292641Ethyl 2-(6-(5-amino-1,3,4-thiadiazol-2-yloxy)-1-hydroxy-4-methyl-1,3-dihydrobenzo[c][1,2]oxaborol-3-yl)acetate

生成物 1

HCID 58292750Ethyl 2-(6-(5-acetamido-1,3,4-thiadiazol-2-yloxy)-1-hydroxy-4-methyl-1,3-dihydrobenzo[c][1,2]oxaborol-3-yl)acetate

試薬・触媒・溶媒 1

HCID 6344Dichloromethane溶媒

実験手順

To a solution of ethyl 2-(6-(5-amino-1,3,4-thiadiazol-2-yloxy)-1-hydroxy-4-methyl-1,3-dihydrobenzo[c][1,2]oxaborol-3-yl)acetate (70 mg, 0.2 mmol) in DCM (10 mL) was added Et3N (0.11 ml) and acetic anhydride (0.08 mL). The mixture was stirred at room overnight. The mixture was concentrated and precipitate was filtered and washed with a mixture of hexane and ethyl acetate to afford the product as a light yellow solid (59 mg). 1H NMR (DMSO-d6) δ 12.44 (s, 1H), 9.28 (s, 1H), 7.4 (s, 1H), 7.26 (s, 1H), 5.54 (d, 1H), 4.03 (q, H) 3.14 (dd, 1H), 2.48 (d, 1H), 2.35 (s, 3H), 2.13 (s, 3H), 1.11 (t, 3H); MS found: (M+H)+=392.1.

後処理

  1. concentrationThe mixture was concentrated
  2. filtrationprecipitate was filtered
  3. washwashed with a mixture of hexane and ethyl acetate

出典と根拠

ORDレコード
ord-160f5a14f9cb4a60afd34b8d103768bc
出典データセット
uspto-grants-2013_01
特許番号
US08343944B2

反応ノート

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