Sodium Carbonate → Methyl 2-(4-((2-cyclopentyl-6-ethylpyrimidin-4-yl)methyl)phenyl)acetate

HRID 1508932Notes

Reaction equation

HRID 1508932 reaction equation
Cl[C:2]1[CH:7]=[C:6]([CH2:8][CH3:9])[N:5]=[C:4]([CH:10]2[CH2:14][CH2:13][CH2:12][CH2:11]2)[N:3]=1.CC1(C)C(C)(C)OB([CH2:23][C:24]2[CH:29]=[CH:28][C:27]([CH2:30][C:31]([O:33][CH3:34])=[O:32])=[CH:26][CH:25]=2)O1.C([O-])([O-])=O.[Na+].[Na+]>O1CCOCC1.O.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.Cl[Pd]Cl.[Fe+2]>[CH:10]1([C:4]2[N:3]=[C:2]([CH2:23][C:24]3[CH:25]=[CH:26][C:27]([CH2:30][C:31]([O:33][CH3:34])=[O:32])=[CH:28][CH:29]=3)[CH:7]=[C:6]([CH2:8][CH3:9])[N:5]=2)[CH2:11][CH2:12][CH2:13][CH2:14]1

Participants

7

Reactant 3

HCID 10340Sodium CarbonateHCID 609214014-Chloro-2-cyclopentyl-6-ethylpyrimidineHCID 674944814-(2-Methoxy-2-oxoethyl)benzylboronic Acid Pinacol Ester

Product 1

HCID 90109465Methyl 2-(4-((2-cyclopentyl-6-ethylpyrimidin-4-yl)methyl)phenyl)acetateYield 14%

Reagents, catalysts & solvents 3

HCID 178418228Bis(cyclopenta-1,4-dien-1-yl(diphenyl)phosphane);dichloropalladium;iron(2+)CatalystHCID 962WaterSolventHCID 312751,4-DioxaneSolvent

Conditions

Temperature
90 °C

Procedure

A mixture of 4-chloro-2-cyclopentyl-6-ethylpyrimidine (0.275 g, 0.95 mmol), methyl 2-(4-((4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)methyl)phenyl)acetate (0.200 g, 0.95 mmol), Pd(dppf)Cl2 (0.078 g, 0.095 mmol), and powdered Na2CO3 (0.302 g, 2.85 mmol) in dioxane (5 mL) and water (3 mL) was stirred under an argon atmosphere at 90° C. for 48 h. After this time, the mixture was cooled and filtered through celite washing with ethyl acetate. The filtrate was washed with brine (3×15 mL), dried over sodium sulfate, filtered, and concentrated. The residue was purified by column chromatography (silica, hexane/ethyl acetate) to afford the title compound (0.027 g, 14%) as a brown oil. MW=338.44. 1H NMR (DMSO-d6, 500 MHz) δ 7.28-7.22 (m, 2H), 7.21-7.17 (m, 2H), 7.01 (s, 1H), 3.96 (s, 2H), 3.63 (s, 2H), 3.59 (s, 3H), 3.21 (quin, J=8.1 Hz, 1H), 2.63 (q, J=7.6 Hz, 2H), 2.01-1.90 (m, 2H), 1.88-1.79 (m, 2H), 1.78-1.70 (m, 2H), 1.69-1.57 (m, 2H), 1.17 (t, J=7.6 Hz, 3H); APCI MS m/z 339 [M+H]+.

Workup

  1. temperatureAfter this time, the mixture was cooled
  2. filtrationfiltered
  3. washthrough celite washing with ethyl acetate
  4. washThe filtrate was washed with brine (3×15 mL)
  5. dry with materialdried over sodium sulfate
  6. filtrationfiltered
  7. concentrationconcentrated
  8. customThe residue was purified by column chromatography (silica, hexane/ethyl acetate)

Sources & evidence

ORD record
ord-aefce0809de5472a981ee36f0c4dc55a
Source dataset
uspto-grants-2015_12
Patent number
US09221843B2

Reaction notes

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