Toluene → Ethyl 4-[(2-methoxypyridin-4-yl)methyl]quinoline-2-carboxylate

HRID 1497329Notes

Reaction equation

HRID 1497329 reaction equation
CC1(C)C(C)(C)OB([C:9]2[C:18]3[C:13](=[CH:14][CH:15]=[CH:16][CH:17]=3)[N:12]=[C:11]([C:19]([O:21][CH2:22][CH3:23])=[O:20])[CH:10]=2)O1.Br[CH2:26][C:27]1[CH:32]=[CH:31][N:30]=[C:29]([O:33][CH3:34])[CH:28]=1.C1(C)C=CC=CC=1.C([O-])([O-])=O.[Na+].[Na+]>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.C(O)C>[CH3:34][O:33][C:29]1[CH:28]=[C:27]([CH2:26][C:9]2[C:18]3[C:13](=[CH:14][CH:15]=[CH:16][CH:17]=3)[N:12]=[C:11]([C:19]([O:21][CH2:22][CH3:23])=[O:20])[CH:10]=2)[CH:32]=[CH:31][N:30]=1

Participants

7

Reactant 4

HCID 1140TolueneHCID 10340Sodium CarbonateHCID 198054314-(Bromomethyl)-2-methoxypyridineHCID 60209908Ethyl 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)quinoline-2-carboxylate

Product 1

HCID 60209910Ethyl 4-[(2-methoxypyridin-4-yl)methyl]quinoline-2-carboxylate

Reagents, catalysts & solvents 2

HCID 178418397HCID 178418397, compoundCatalystHCID 702EthanolSolvent

Conditions

Temperature
85 °C

Procedure

In a microwave vial containing ethyl 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)quinoline-2-carboxylate (K4) (0.23 g, 0.69 mmol), 4-(bromomethyl)-2-methoxypyridine (M3) (0.17 g, 0.83 mmol), and palladium tetrakis (0.52 g, 0.45 mmol) was, added 4.0 mL toluene, 2.8 mL, ethanol, and 1.0 mL 2.0 M aqueous Na2CO3. The resulting solution was heated to 85° C. for 30 minutes, filtered through Celite, and washed with excess ethyl acetate. The filtrate was washed twice with water, washed with brine, dried over sodium sulfate, filtered, and concentrated. The resultant residue was subjected to silica gel chromatography eluting with 0-100% ethyl acetate in hexanes to afford ethyl 4-[(2-methoxypyridin-4-yl)methyl]quinoline-2-carboxylate (M4) that gave a mass ion (ES+) of 323.3 for M+H+.

Workup

  1. filtrationfiltered through Celite
  2. washwashed with excess ethyl acetate
  3. washThe filtrate was washed twice with water
  4. washwashed with brine
  5. dry with materialdried over sodium sulfate
  6. filtrationfiltered
  7. concentrationconcentrated
  8. washeluting with 0-100% ethyl acetate in hexanes

Sources & evidence

ORD record
ord-1873c5c5645b4401a0c903f6976f9d9e
Source dataset
uspto-grants-2015_12
Patent number
US09199939B2

Reaction notes

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