Sodium Carbonate → HCID 86599572, compound

HRID 855048Notes

Reaction equation

HRID 855048 reaction equation
Br[CH2:2][C:3]1[CH:12]=[C:11]2[C:6]([CH:7]=[C:8]([C:17]([O:19][CH2:20][CH3:21])=[O:18])[CH:9]([C:13]([F:16])([F:15])[F:14])[O:10]2)=[CH:5][C:4]=1[Cl:22].[CH:23]([C:25]1[CH:30]=[CH:29][C:28](B(O)O)=[CH:27][CH:26]=1)=[O:24].C([O-])([O-])=O.[Na+].[Na+]>COCCOC.CCO.COCCOC.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[Cl:22][C:4]1[C:3](=[CH:2][C:28]2[CH:29]=[CH:30][C:25]([CH:23]=[O:24])=[CH:26][CH:27]=2)[CH:12]=[C:11]2[C:6](=[CH:7][CH:8]([C:17]([O:19][CH2:20][CH3:21])=[O:18])[CH:9]([C:13]([F:16])([F:15])[F:14])[O:10]2)[CH:5]=1

Participants

7

Reactant 3

HCID 10340Sodium CarbonateHCID 5910734-Formylphenylboronic AcidHCID 69517129ethyl 7-(bromomethyl)-6-chloro-2-(trifluoromethyl)-2H-chromene-3-carboxylate

Product 1

HCID 86599572HCID 86599572, compoundYield 47.1%

Reagents, catalysts & solvents 3

HCID 178418397HCID 178418397, compoundCatalystHCID 80711,2-DimethoxyethaneSolventHCID 20074477Dimethoxyethane ethanolSolvent

Conditions

Temperature
50 °C

Procedure

The ethyl 7-(bromomethyl)-6-chloro-2-(trifluoromethyl)-2H-chromene-3-carboxylate from Example 16, Step 3 (2.0 g, 5.0 mmol) and Pd(PPh3)4 (174 mg, 0.15 mmole) were mixed in DME (50 mL) and the mixture was heated at 50° C. for 10 min. The solution of 4-formylphenylboronic acid (1.12 g, 7.5 mmole) in EtOH/DME (1:1, 4 mL) was added to above mixture and followed by adding 2 M Na2CO3 (5 mL, 10 mmole). The mixture then was heated to 90° C. for overnight. The reaction was quenched with water and extracted with EtOAc. The organic layer was washed with brine and dried over MgSO4 and filtered. The filtrate was concentrated to afford the crude product, which was purified by Biotage chromatography eluted with 5 to 10% EtOAc in hexane to give 1 g the desired product as a yellow solid (47%), which had suitable purity to use without fuirther purification.

Workup

  1. temperatureThe mixture then was heated to 90° C. for overnight
  2. customThe reaction was quenched with water
  3. extractionextracted with EtOAc
  4. washThe organic layer was washed with brine
  5. dry with materialdried over MgSO4
  6. filtrationfiltered
  7. concentrationThe filtrate was concentrated
  8. customto afford the crude product, which
  9. customwas purified by Biotage chromatography
  10. washeluted with 5 to 10% EtOAc in hexane

Sources & evidence

ORD record
ord-ba5399f1762d4c37bc64fa482784cab0
Source dataset
uspto-grants-2007_08
Patent number
US07259266B2

Reaction notes

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