Water → 2-Methyl-2-[(4-{2-[(methylsulfonyl)oxy]ethyl}-1,3-thiazol-2-yl)thio]propionic acid tert-butyl ester

HRID 914285Notes

Reaction equation

[C:1]([O:5][C:6](=[O:19])[C:7]([S:10][C:11]1[S:12][CH:13]=[C:14]([CH2:16][CH2:17][OH:18])[N:15]=1)([CH3:9])[CH3:8])([CH3:4])([CH3:3])[CH3:2].C(N(CC)CC)C.[CH3:27][S:28](Cl)(=[O:30])=[O:29].O>ClCCl>[C:1]([O:5][C:6](=[O:19])[C:7]([CH3:9])([S:10][C:11]1[S:12][CH:13]=[C:14]([CH2:16][CH2:17][O:18][S:28]([CH3:27])(=[O:30])=[O:29])[N:15]=1)[CH3:8])([CH3:2])([CH3:4])[CH3:3]

Participants

Conditions

Temperature: 0 °C

Procedure

2-{[4-(2-Hydroxyethyl)-1,3-thiazol-2-yl]thio}-2-methylpropionic acid tert-butyl ester (98 g) synthesized in Example 4 and triethylamine (50 mL) were dissolved in dichloromethane (800 mL), methanesulfonyl chloride (38.8 g) was added dropwise under ice-cooling, and the mixture was stirred for 2 hr at 0° C. Water was added to the reaction mixture, and the organic layer was partitioned. The organic layer was washed with saturated brine and dried over anhydrous sodium sulfate, and the solvent was evaporated. The title compound was quantitatively obtained as a crude brown oil and used as it was for the next step.

Workup

temperaturecooling
customthe organic layer was partitioned
washThe organic layer was washed with saturated brine
dry with materialdried over anhydrous sodium sulfate
customthe solvent was evaporated

Sources & evidence

ORD record: ord-ca3f0f679f564dc18a9f8ff540864d7a
Source dataset: uspto-grants-2011_09
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08026370B2

Reaction notes

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