Cesium carbonate → 1-(5-Tert-butylisoxazol-3-yl)-3-[3-(7-ethoxy-6-methoxyquinazolin-4-ylthio)phenyl]urea

HRID 631296ノート

反応式

HRID 631296 の反応式
[C:1]([C:5]1[O:9][N:8]=[C:7]([NH:10][C:11]([NH:13][C:14]2[CH:19]=[CH:18][CH:17]=[C:16]([SH:20])[CH:15]=2)=[O:12])[CH:6]=1)([CH3:4])([CH3:3])[CH3:2].C(C1ON=C(NC(NC2C=CC=C(O[C:41]3[C:50]4[C:45](=[CH:46][C:47]([O:53][CH2:54][CH3:55])=[C:48]([O:51][CH3:52])[CH:49]=4)[N:44]=[CH:43][N:42]=3)C=2)=O)C=1)(C)(C)C.C([O-])([O-])=O.[Cs+].[Cs+]>C(O)(C)C>[C:1]([C:5]1[O:9][N:8]=[C:7]([NH:10][C:11]([NH:13][C:14]2[CH:19]=[CH:18][CH:17]=[C:16]([S:20][C:41]3[C:50]4[C:45](=[CH:46][C:47]([O:53][CH2:54][CH3:55])=[C:48]([O:51][CH3:52])[CH:49]=4)[N:44]=[CH:43][N:42]=3)[CH:15]=2)=[O:12])[CH:6]=1)([CH3:4])([CH3:2])[CH3:3]

参加物

5

反応物 3

HCID 10796Cesium carbonateHCID 566583071-(5-Tert-butylisoxazol-3-yl)-3-[3-(7-ethoxy-6-methoxyquinazolin-4-yloxy)phenyl]ureaHCID 668758091-(5-Tert-butylisoxazol-3-yl)-3-(3-mercaptophenyl)urea

生成物 1

HCID 442433061-(5-Tert-butylisoxazol-3-yl)-3-[3-(7-ethoxy-6-methoxyquinazolin-4-ylthio)phenyl]urea収率 48%

試薬・触媒・溶媒 1

HCID 3776Isopropanol溶媒

反応条件

温度
70 °C

実験手順

A mixture of 1-(5-tert-butylisoxazol-3-yl)-3-(3-mercaptophenyl)urea described in Example 44A (0.146 g 0.5 mmol), 4-chloro-7-ethoxy-6-methoxyquinazoline from Example 6B Step 1 (0.12 g, 0.5 mmol), and Cs2CO3 (0.161 mg, 0.5 mmol) in isopropanol (10 mL) was heated at 70° C. for 7 hours. It was quenched with water and extracted with CH2Cl2. Extracts were dried over MgSO4 and concentrated under reduced pressure. It was purified by silica gel chromatography with EtOAc/hexane as eluant to afford 1-(5-tert-butylisoxazol-3-yl)-3-[3-(7-ethoxy-6-methoxyquinazolin-4-ylthio)phenyl]urea as solid (0.118 g, 48%). 1H NMR (300 MHz, CDCl3) δ 9.3 (br, 1H), 8.74 (s, 1H), 8.05 (s, 1H), 7.86 (s, 1H), 7.62 (d, 1H), 7.37 (m, 3H), 7.25 (1H), 5.91 (s, 1H), 4.29 (q, 2H), 4.06 (s, 3H), 1.58 (t, 3H), 1.32 (s, 9H); LC-MS (ESI) m/z 494 (M+H)+.

後処理

  1. customIt was quenched with water
  2. extractionextracted with CH2Cl2
  3. dry with materialExtracts were dried over MgSO4
  4. concentrationconcentrated under reduced pressure
  5. customIt was purified by silica gel chromatography with EtOAc/hexane as eluant

出典と根拠

ORDレコード
ord-3c8b8c949f224048946fc4c9879b1281
出典データセット
uspto-grants-2016_04
特許番号
US09320739B2

反応ノート

読み込み中…