반응식
[CH2:1]([O:3][C:4](=[O:33])[CH:5]([C:7]1[C:12]([F:13])=[CH:11][CH:10]=[C:9]([O:14][Si:15]([C:28]([CH3:31])([CH3:30])[CH3:29])([C:22]2[CH:27]=[CH:26][CH:25]=[CH:24][CH:23]=2)[C:16]2[CH:21]=[CH:20][CH:19]=[CH:18][CH:17]=2)[C:8]=1[F:32])[OH:6])[CH3:2].I[CH2:35][CH3:36]>>[CH2:1]([O:3][C:4](=[O:33])[CH:5]([C:7]1[C:12]([F:13])=[CH:11][CH:10]=[C:9]([O:14][Si:15]([C:28]([CH3:29])([CH3:31])[CH3:30])([C:16]2[CH:21]=[CH:20][CH:19]=[CH:18][CH:17]=2)[C:22]2[CH:27]=[CH:26][CH:25]=[CH:24][CH:23]=2)[C:8]=1[F:32])[O:6][CH2:35][CH3:36])[CH3:2]참가 물질
3
반응 조건
- 온도
- 90 °C
실험 절차
A mixture of (RS)-[3-(tert-butyl-diphenyl-silanyloxy)-2,6-difluoro-phenyl]-hydroxy-acetic acid ethyl ester (70.8 g), Ag2O (69.7 g) and iodoethane (117 g) in Tol (700 ml) was stirred 68 h at 90° C. After filtration and evaporation of the solvent the product was separated from the remaining starting material by MPLC (Hept to Hept/AcOEt 1:9). The procedure was repeated with the recovered starting material. 62.5 g (83%) of (RS)-[3-(tert-butyl-diphenyl-silanyloxy)-2,6-difluoro-phenyl]-ethoxy-acetic acid ethyl ester were obtained. Light yellow oil. MS 498.3 (1, M+); 441.1 (73, [M−tBu]+); 425.2 (33, [M-COOEt]+).
후처리
- filtrationAfter filtration and evaporation of the solvent the product
- customwas separated from the
출처 및 근거
- ORD 기록
- ord-0f72e080d73e4c0fb337ce947f015653
- 출처 데이터셋
- uspto-grants-2006_10
- 특허 번호
- US07129238B2
연결된 노트
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