Triethylamine → 1-[4-(Benzenesulfonylamino)methyl-1,3-thiazol-2-yl]-3-methanesulfonyloxyazetidine

To a solution of 1-[4-(benzenesulfonylamino)methyl-1,3-thiazol-2-yl]-3-hydroxyazetidine (1.06 g, 3.26 mmol) (obtained as described in Reference Example 65(2)) in methylene chloride (50 ml) were added methanesulfonyl chloride (0.38 ml, 4.89 mmol) and triethylamine (0.68 ml, 4.89 mmol) in an ice bath and the mixture was stirred for 1 hour. After checking the completion of the reaction, the mixture was partitioned between ethyl acetate and saturated aqueous sodium hydrogencarbonate solution. The organic layer was washed with saturated aqueous sodium chloride solution, dried over anhydrous sodium sulfate, filtered and concentrated under reduced pressure. The residue was purified by chromatography on a silica gel column using ethyl acetate as the eluant to afford 1-[4-(benzenesulfonylamino)methyl-1,3-thiazol-2-yl]-3-methanesulfonyloxyazetidine (1.16 mg, yield 91%) as a pale yellow solid.

1. customthe completion of the reaction
2. customthe mixture was partitioned between ethyl acetate and saturated aqueous sodium hydrogencarbonate solution
3. washThe organic layer was washed with saturated aqueous sodium chloride solution
4. dry with materialdried over anhydrous sodium sulfate
5. filtrationfiltered
6. concentrationconcentrated under reduced pressure
7. customThe residue was purified by chromatography on a silica gel column

ORD-Eintrag

ord-0f0b6a0dfef34b8e95bf5674f5fdf718

Quelldatensatz

uspto-grants-2006_02

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US07001897B2