Lithium Hydroxide → HCID 22273914, compound

HRID 1394797Notes

Reaction equation

C([O:3][C:4](=[O:33])[CH:5]([O:30][CH2:31][CH3:32])[CH2:6][C:7]1[CH:12]=[CH:11][C:10]([O:13][CH2:14][CH2:15][CH2:16][C:17]2[N:18]=[C:19]([C:23]3[CH:28]=[CH:27][CH:26]=[CH:25][CH:24]=3)[O:20][C:21]=2[CH3:22])=[CH:9][C:8]=1[CH3:29])C.[Li+].[OH-]>>[CH2:31]([O:30][CH:5]([CH2:6][C:7]1[CH:12]=[CH:11][C:10]([O:13][CH2:14][CH2:15][CH2:16][C:17]2[N:18]=[C:19]([C:23]3[CH:24]=[CH:25][CH:26]=[CH:27][CH:28]=3)[O:20][C:21]=2[CH3:22])=[CH:9][C:8]=1[CH3:29])[C:4]([OH:33])=[O:3])[CH3:32]

Participants

Reactant 2

HCID 3939Lithium Hydroxide

HCID 69280692HCID 69280692, compound

Product 1

HCID 22273914HCID 22273914, compound

Procedure

In analogy to the procedure described in example 1 g], [rac]-2-ethoxy-3-{2-methyl-4-[3-(5-methyl-2-phenyl-oxazol-4-yl)-propoxy]-phenyl}-propionic acid ethyl ester was treated with LiOH to obtain [rac]-2-ethoxy-3-{2-methyl-4-[3-(5-methyl-2-phenyl-oxazol-4-yl)-propoxy]-phenyl}-propionic acid as colorless liquid, 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.

Sources & evidence

ORD record: ord-104cd6ea571f48a2915fe6b25eb67127
Source dataset: uspto-grants-2008_03
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07348349B2

Reaction notes

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