Acetyl chloride → HCID 57968771、化合物

HRID 1471612ノート

反応式

HRID 1471612 の反応式
NC[C:3]1[CH:19]=[CH:18][C:6]([O:7][C:8]2[CH:17]=[CH:16][C:11]3[B:12]([OH:15])[O:13][CH2:14][C:10]=3[CH:9]=2)=[CH:5][CH:4]=1.[CH3:20][CH2:21][N:22](CC)CC.C(Cl)(=[O:29])C>C(Cl)Cl>[OH:15][B:12]1[C:11]2[CH:16]=[CH:17][C:8]([O:7][C:6]3[CH:5]=[CH:4][C:3]([NH:22][C:21](=[O:29])[CH3:20])=[CH:19][CH:18]=3)=[CH:9][C:10]=2[CH2:14][O:13]1

参加物

5

反応物 3

HCID 6367Acetyl chlorideHCID 8471TriethylamineHCID 57968923Crisaborole intermediate

生成物 1

HCID 57968771HCID 57968771、化合物収率 94.3%

試薬・触媒・溶媒 1

HCID 6344Dichloromethane溶媒

実験手順

To a 20 mL scintillation vial containing 5-(4-aminomethyl-phenoxy)-3H-benzo[c][1,2]oxaborol-1-ol (150 mg, 0.59 mmol, 1.0 eq.) in DCM (5.0 mL) was added Et3N (180 μL, 1.3 mmol, 2.2 eq.), followed by acetyl chloride (84 μL, 1.2 mmol, 2.0 eq.). The mixture was stirred at room temperature overnight. The mixture was concentrated under reduced pressure. The residue was applied to silica chromatography eluting with MeOH/DCM (0:100 to 10:90) to give N-[4-(1-hydroxy-1,3-dihydro-benzo[c][1,2]oxaborol-5-yloxy)-phenyl]-acetamide as a white solid. LCMS (m/z) 298 (M+H); 1H NMR(CHLOROFORM-d) δ: 7.55 (d, J=8.0 Hz, 1H), 7.11 (d, J=8.6 Hz, 2H), 6.74-6.83 (m, 3H), 6.68 (d, J=1.4 Hz, 1H), 4.79 (s, 2H), 4.21 (d, J=5.8 Hz, 2H), 1.84 (s, 3H). Amount obtained, 165 mg, 94.3% yield.

後処理

  1. concentrationThe mixture was concentrated under reduced pressure
  2. washeluting with MeOH/DCM (0:100 to 10:90)

出典と根拠

ORDレコード
ord-ae627f483d2a4cf2928527c197a0bb18
出典データセット
uspto-grants-2015_04
特許番号
US09012431B2

反応ノート

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