Cesium carbonate → N-{4-Chloro-2-[(2S)-oxiran-2-ylmethoxy]phenyl}acetamide

HRID 270074

Reaction equation

HRID 270074 reaction equation
[O:1]1[CH2:3][C@H:2]1[CH2:4]OS(C1C=CC=C([N+]([O-])=O)C=1)(=O)=O.[Cl:18][C:19]1[CH:24]=[CH:23][C:22]([NH:25][C:26](=[O:28])[CH3:27])=[C:21]([OH:29])[CH:20]=1.C([O-])([O-])=O.[Cs+].[Cs+]>CN(C=O)C>[Cl:18][C:19]1[CH:24]=[CH:23][C:22]([NH:25][C:26](=[O:28])[CH3:27])=[C:21]([O:29][CH2:4][C@@H:2]2[CH2:3][O:1]2)[CH:20]=1

Participants

5

Reactant 3

HCID 10796Cesium carbonateHCID 146490Benzenesulfonic acid, 3-nitro-, (2S)-2-oxiranylmethyl esterHCID 177739N-(4-Chloro-2-hydroxyphenyl)acetamide

Product 1

HCID 86601481N-{4-Chloro-2-[(2S)-oxiran-2-ylmethoxy]phenyl}acetamideYield 73.7%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Conditions

Temperature
0 °C

Procedure

To a mixture of (2S)-oxiran-2ylmethyl3-nitrobenzenesulfonate (3.37 g, 13.25 mmol), N-(4-chloro-2-hydroxyphenyl)acetamide (2.46 g, 17.23 mmol) and Cs2CO3 (6.48 g, 19.88 mmol) was added DMF (20 mL) at 0° C. and the reaction mixture was stirred at 0° C. for 3 h. The reaction mixture was partitioned between ethyl acetate and water. The organic layer was dried over Na2SO4, filtered and concentrated. The residue was purified by silica gel flash chromatography (hexane:ethyl acetate 3:2) to give the subtitled compound (2.36 g).

Workup

  1. customThe reaction mixture was partitioned between ethyl acetate and water
  2. dry with materialThe organic layer was dried over Na2SO4
  3. filtrationfiltered
  4. concentrationconcentrated
  5. customThe residue was purified by silica gel flash chromatography (hexane:ethyl acetate 3:2)

Sources & evidence

ORD record
ord-62d08c44daf2470caad11857e41ea86f
Source dataset
uspto-grants-2008_11
Patent number
US07449475B2

Linked notes

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