Cesium carbonate → 3-[2-(4-Carboxy-5-trifluoromethyl-furan-2-ylmethoxy)-5-chloro-phenoxy]-azetidine-1-carboxylic acid tert-butyl ester

HRID 237250Notes

Reaction equation

HRID 237250 reaction equation
[C:1]([O:5][C:6]([N:8]1[CH2:11][CH:10]([O:12][C:13]2[CH:18]=[C:17]([Cl:19])[CH:16]=[CH:15][C:14]=2[OH:20])[CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].C([O:23][C:24]([C:26]1[CH:30]=[C:29]([CH2:31]Br)[O:28][C:27]=1[C:33]([F:36])([F:35])[F:34])=[O:25])C.C([O-])([O-])=O.[Cs+].[Cs+].[OH-].[Na+]>CN(C=O)C.CCOC(C)=O>[C:1]([O:5][C:6]([N:8]1[CH2:9][CH:10]([O:12][C:13]2[CH:18]=[C:17]([Cl:19])[CH:16]=[CH:15][C:14]=2[O:20][CH2:31][C:29]2[O:28][C:27]([C:33]([F:35])([F:34])[F:36])=[C:26]([C:24]([OH:25])=[O:23])[CH:30]=2)[CH2:11]1)=[O:7])([CH3:4])([CH3:2])[CH3:3]

Participants

7

Reactant 4

HCID 10796Cesium carbonateHCID 14798Sodium HydroxideHCID 13237850Ethyl 5-(bromomethyl)-2-(trifluoromethyl)furan-3-carboxylateHCID 673429093-(5-Chloro-2-hydroxy-phenoxy)-azetidine-1-carboxylic acid tert-butyl ester

Product 1

HCID 673480933-[2-(4-Carboxy-5-trifluoromethyl-furan-2-ylmethoxy)-5-chloro-phenoxy]-azetidine-1-carboxylic acid tert-butyl ester

Reagents, catalysts & solvents 2

HCID 6228DimethylformamideSolventHCID 8857Ethyl AcetateSolvent

Procedure

The title compound was prepared as described in Example 1 Step D using 3-(5-chloro-2-hydroxy-phenoxy)-azetidine-1-carboxylic acid tert-butyl ester (0.15 g, 0.50 mmol), the title compound of Step A (0.18 g, 0.60 mmol), Cs2CO3 (0.41 g, 1.2 mmol), KI (0.12 g, 0.70 mmol) in DMF, except upon completion of the reaction 1N NaOH and EtOAc were added. The organic layer was washed with 1N NaOH and dried. The crude material was purified by RP HPLC to provide the title compound. 1H NMR (CDCl3): 7.20-6.92 (m, 1H), 6.91-6.80 (m, 2H), 6.77-6.69 (m, 1H), 6.53 (d, J=2.1 Hz, 1H), 4.87 (s, 2H), 4.79-4.69 (m, 1H), 4.27-4.12 (m, 2H), 4.00-3.88 (m, 2H), 1.38 (s, 9H).

Workup

  1. customThe title compound was prepared
  2. additionwere added
  3. washThe organic layer was washed with 1N NaOH
  4. customdried
  5. customThe crude material was purified by RP HPLC

Sources & evidence

ORD record
ord-1cb6e87a6de846118fb2db001002fd56
Source dataset
uspto-grants-2014_02
Patent number
US08642583B2

Reaction notes

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