4-Chloro-7-ethoxy-6-methoxyquinazoline → 1-(5-Tert-butylisoxazol-3-yl)-3-[3-(7-ethoxy-6-methoxyquinazolin-4-yloxy)phenyl]urea

HRID 1917635노트

반응식

HRID 1917635 반응식
[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]([OH:20])[CH:15]=2)=[O:12])[CH:6]=1)([CH3:4])([CH3:3])[CH3:2].Cl[C:22]1[C:31]2[C:26](=[CH:27][C:28]([O:34][CH2:35][CH3:36])=[C:29]([O:32][CH3:33])[CH:30]=2)[N:25]=[CH:24][N:23]=1.CC(C)([O-])C.[K+]>C1COCC1>[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]([O:20][C:22]3[C:31]4[C:26](=[CH:27][C:28]([O:34][CH2:35][CH3:36])=[C:29]([O:32][CH3:33])[CH:30]=4)[N:25]=[CH:24][N:23]=3)[CH:15]=2)=[O:12])[CH:6]=1)([CH3:4])([CH3:2])[CH3:3]

참가 물질

5

반응물 3

HCID 117705294-Chloro-7-ethoxy-6-methoxyquinazolineHCID 23665647Potassium tert-butoxideHCID 668765951-(5-Tert-butylisoxazol-3-yl)-3-(3-hydroxyphenyl)urea2회

생성물 1

HCID 566583071-(5-Tert-butylisoxazol-3-yl)-3-[3-(7-ethoxy-6-methoxyquinazolin-4-yloxy)phenyl]urea

시약·촉매·용매 1

HCID 8028Tetrahydrofuran용매

실험 절차

A mixture of 1-(5-tert-butylisoxazol-3-yl)-3-(3-hydroxyphenyl)urea from Example 1A (0.2 g 0.73 mmol), 4-chloro-7-ethoxy-6-methoxyquinazoline from the previous step (0.18 g, 0.75 mmol), and potassium tert-butoxide (0.252 g, 2.25 mmol) in THF was stirred at room temperature overnight, and then was heated at 60° C. for 5 hours. The reaction was still found to be incomplete and additional 1-(5-tert-butylisoxazol-3-yl)-3-(3-hydroxyphenyl)urea (0.07 g, 0.025 mmol) was added. The mixture was heated further at 60° C. overnight. The reaction was quenched with water and extracted with EtOAc. 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-yloxy)phenyl]urea as a solid (0.078 g). 1H NMR (300 MHz, CDCl3) δ 9.12 (br and s, 2H), 8.61 (s, 1H), 7.64 (s, 1H), 7.54 (s, 1H), 7.31 (m, 3H), 7.0 (d, 1H), 6.05 (s, 1H), 4.29 (q, 2H), 4.05 (s, 3H), 1.58 (t, 3H), 1.30 (s, 9H); LC-MS (ESI) m/z 478 (M+H)+.

후처리

  1. temperaturewas heated at 60° C. for 5 hours
  2. temperatureThe mixture was heated further at 60° C. overnight
  3. customThe reaction was quenched with water
  4. extractionextracted with EtOAc
  5. dry with materialExtracts were dried over MgSO4
  6. concentrationconcentrated under reduced pressure
  7. customIt was purified by silica gel chromatography with EtOAc/hexane as eluant

출처 및 근거

ORD 기록
ord-8e99f6d3b1554caca08878c8da2c1db1
출처 데이터셋
uspto-grants-2013_12
특허 번호
US08618289B2

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