Potassium Iodide → (S)-2-ethoxy-3-[2-ethyl-4-(5-methyl-2-phenyl-oxazol-4-ylmethoxy)-phenyl]-propionic acid methyl ester

HRID 1064914Notes

Reaction equation

[CH3:1][O:2][C:3](=[O:18])[C@@H:4]([O:15][CH2:16][CH3:17])[CH2:5][C:6]1[CH:11]=[CH:10][C:9]([OH:12])=[CH:8][C:7]=1[CH2:13][CH3:14].Cl[CH2:20][C:21]1[N:22]=[C:23]([C:27]2[CH:32]=[CH:31][CH:30]=[CH:29][CH:28]=2)[O:24][C:25]=1[CH3:26].C(=O)([O-])[O-].[Cs+].[Cs+].[I-].[K+]>>[CH3:1][O:2][C:3](=[O:18])[C@@H:4]([O:15][CH2:16][CH3:17])[CH2:5][C:6]1[CH:11]=[CH:10][C:9]([O:12][CH2:20][C:21]2[N:22]=[C:23]([C:27]3[CH:32]=[CH:31][CH:30]=[CH:29][CH:28]=3)[O:24][C:25]=2[CH3:26])=[CH:8][C:7]=1[CH2:13][CH3:14]

Participants

Reactant 4

HCID 4875Potassium Iodide

HCID 10796Cesium carbonate

HCID 97942894-(Chloromethyl)-5-methyl-2-phenyl-1,3-oxazole

HCID 68617384(2S)-2-ethoxy-3-(2-ethyl-4-hydroxy-phenyl)-propionic acid methyl ester

Product 1

HCID 69279895(S)-2-ethoxy-3-[2-ethyl-4-(5-methyl-2-phenyl-oxazol-4-ylmethoxy)-phenyl]-propionic acid methyl ester

Procedure

In analogy to the procedure described in example 1 f], (2S)-2-ethoxy-3-(2-ethyl-4-hydroxy-phenyl)-propionic acid methyl ester was reacted with 4-chloromethyl-5-methyl-2-phenyl-oxazole in the presence of cesium carbonate and potassium iodide to yield (S)-2-ethoxy-3-[2-ethyl-4-(5-methyl-2-phenyl-oxazol-4-ylmethoxy)-phenyl]-propionic acid methyl ester as colorless liquid.

Sources & evidence

ORD record: ord-b80dc8d6d1a649bb9f78ddf9b3e33b6f
Source dataset: uspto-grants-2005_11
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US06969725B2

Reaction notes

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