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Water → Methyl 2-methoxy-6-(pyrimidin-2-yl)benzoate

HRID 869013
Notes
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Reaction equation

HRID 869013 reaction equation
[CH3:1][O:2][C:3]1[CH:12]=[CH:11][CH:10]=[C:9](B2OC(C)(C)C(C)(C)O2)[C:4]=1[C:5]([O:7][CH3:8])=[O:6].Br[C:23]1[N:28]=[CH:27][CH:26]=[CH:25][N:24]=1.C([O-])([O-])=O.[Na+].[Na+].O>C1COCC1.CC(P(C(C)(C)C)[C-]1C=CC=C1)(C)C.CC(P(C(C)(C)C)[C-]1C=CC=C1)(C)C.Cl[Pd]Cl.[Fe+2].CCOC(C)=O>[CH3:1][O:2][C:3]1[CH:12]=[CH:11][CH:10]=[C:9]([C:23]2[N:28]=[CH:27][CH:26]=[CH:25][N:24]=2)[C:4]=1[C:5]([O:7][CH3:8])=[O:6]
ParticipantsConditionsProcedureWorkupSources & evidenceReaction notes

Participants

8

Reactant 4

HCID 962Water2×HCID 10340Sodium CarbonateHCID 783452-BromopyrimidineHCID 56776719Methyl 2-methoxy-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzoate

Product 1

HCID 90411951Methyl 2-methoxy-6-(pyrimidin-2-yl)benzoateYield 63.4%

Reagents, catalysts & solvents 3

HCID 178454861
HCID 178454861, compound
Catalyst
HCID 8028TetrahydrofuranSolvent
HCID 8857Ethyl AcetateSolvent

Conditions

Temperature
80 °C

Procedure

In a microwave vial was dissolved methyl 2-methoxy-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzoate (CAS 1146214-77-8) (500 mg, 1.71 mmol) and 2-bromopyrimidine (344 mg, 2.05 mmol) in THF (8.5 mL). Na2CO3 (544 mg, 5.14 mmol) was then added followed by water (4 mL) and the reaction mixture was degassed with N2 for 10 minutes. PdCl2(dtbpf) (CAS 95408-45-0) (45 mg, 0.069 mmol) was then added and the reaction mixture was heated at 80° C. for 4 h. The mixture was cooled to room temperature and water and EtOAc added. The reaction mixture was extracted with EtOAc (3×). The combined organic layers were dried over Na2SO4, filtered and concentrated. The crude was purified via silica gel chromatography (0-70% EtOAc in hexanes) to afford the title compound (265 mg, 63%). MS (ESI) mass calcd. for C13H12N2O3, 244.1. m/z found 245.1 [M+H]+. 1H NMR (400 MHz, Chloroform-d) δ 8.78 (d, J=4.9 Hz, 2H), 7.99 (dd, J=7.9, 0.9 Hz, 1H), 7.49 (t, J=8.1 Hz, 1H), 7.19 (t, J=4.8 Hz, 1H), 7.09 (dd, J=8.3, 0.9 Hz, 1H), 3.90 (s, 3H), 3.89 (s, 3H).

Workup

  1. customthe reaction mixture was degassed with N2 for 10 minutes
  2. temperatureThe mixture was cooled to room temperature
  3. extractionThe reaction mixture was extracted with EtOAc (3×)
  4. dry with materialThe combined organic layers were dried over Na2SO4
  5. filtrationfiltered
  6. concentrationconcentrated
  7. customThe crude was purified via silica gel chromatography (0-70% EtOAc in hexanes)

Sources & evidence

ORD record
ord-6b602650c4e04e47b119d152d4718c2f
Source dataset
uspto-grants-2015_03
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US08969352B2

Reaction notes

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On this pageParticipantsConditionsProcedureWorkupSources & evidenceReaction notes