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Potassium Carbonate → [Rac]-2-ethoxy-3-{2-ethoxy-4-[2-(4-isopropoxy-phenyl)-5-methyl-oxazol-4-ylmethoxy]-phenyl}-propionic acid ethyl ester

HRID 1394803
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HRID 1394803 반응식
[CH2:1]([O:3][C:4](=[O:20])[CH:5]([O:17][CH2:18][CH3:19])[CH2:6][C:7]1[CH:12]=[CH:11][C:10]([OH:13])=[CH:9][C:8]=1[O:14][CH2:15][CH3:16])[CH3:2].Cl[CH2:22][C:23]1[N:24]=[C:25]([C:29]2[CH:34]=[CH:33][C:32]([O:35][CH:36]([CH3:38])[CH3:37])=[CH:31][CH:30]=2)[O:26][C:27]=1[CH3:28].C(=O)([O-])[O-].[K+].[K+]>CN(C)C=O>[CH2:1]([O:3][C:4](=[O:20])[CH:5]([O:17][CH2:18][CH3:19])[CH2:6][C:7]1[CH:12]=[CH:11][C:10]([O:13][CH2:22][C:23]2[N:24]=[C:25]([C:29]3[CH:34]=[CH:33][C:32]([O:35][CH:36]([CH3:38])[CH3:37])=[CH:31][CH:30]=3)[O:26][C:27]=2[CH3:28])=[CH:9][C:8]=1[O:14][CH2:15][CH3:16])[CH3:2]
참가 물질실험 절차출처 및 근거반응 노트

참가 물질

5

반응물 3

HCID 11430Potassium CarbonateHCID 219742544-(Chloromethyl)-2-(4-isopropoxyphenyl)-5-methyl-1,3-oxazoleHCID 68617228[Rac]-2-ethoxy-3-(2-ethoxy-4-hydroxy-phenyl)-propionic acid ethyl ester

생성물 1

HCID 69284090[Rac]-2-ethoxy-3-{2-ethoxy-4-[2-(4-isopropoxy-phenyl)-5-methyl-oxazol-4-ylmethoxy]-phenyl}-propionic acid ethyl ester

시약·촉매·용매 1

HCID 6228
Dimethylformamide
용매

실험 절차

In analogy to the procedure described in example 1 f], [rac]-2-ethoxy-3-(2-ethoxy-4-hydroxy-phenyl)-propionic acid ethyl ester (example 47 c]) was reacted with 4-chloromethyl-2-(4-isopropoxy-phenyl)-5-methyl-oxazole (example 2 b]) in N,N-dimethylformamide in the presence of potassium carbonate to yield [rac]-2-ethoxy-3-{2-ethoxy-4-[2-(4-isopropoxy-phenyl)-5-methyl-oxazol-4-ylmethoxy]-phenyl}-propionic acid ethyl ester, which was further saponified in analogy to the procedure described in example 1 g], to yield [rac]-2-ethoxy-3-{2-ethoxy-4-[2-(4-isopropoxy-phenyl)-5-methyl-oxazol-4-ylmethoxy]-phenyl}-propionic acid as colorless solid, which can be separated into its antipodes by methods known in the art, such as separation of the antipodes via diastereomeric salts by crystallization with optically pure amines such as e.g. (R) or (S)-1-phenyl-ethylamine, (R) or (S)-1-naphthalen-1-yl-ethylamine, brucine, quinine and quinidine or by separation of the antipodes by specific chromatographic methods using either a chiral adsorbens or a chiral eluent to give the title compound.

출처 및 근거

ORD 기록
ord-0d4a567bdba14b468db1d4238daf2e67
출처 데이터셋
uspto-grants-2008_03
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US07348349B2

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