HCID 11197766, compound → HCID 67354173, compound

HRID 1846150Notes

Reaction equation

HRID 1846150 reaction equation
[CH3:1][C:2]1[N:3]([C:8]2[CH:13]=[C:12]([CH3:14])[C:11]([O:15][CH2:16][C:17]3[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=3)=[C:10]([CH3:23])[N:9]=2)[C:4]([CH3:7])=[CH:5][CH:6]=1.[Li]C1C=CC=CC=1.Br[CH2:32][CH2:33][CH2:34][CH2:35][CH2:36][CH2:37][CH2:38][CH2:39][CH2:40][O:41][CH2:42][C:43]1[CH:48]=[CH:47][CH:46]=[CH:45][CH:44]=1>C1COCC1.CCCCCC>[CH3:1][C:2]1[N:3]([C:8]2[CH:13]=[C:12]([CH3:14])[C:11]([O:15][CH2:16][C:17]3[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=3)=[C:10]([CH2:23][CH2:32][CH2:33][CH2:34][CH2:35][CH2:36][CH2:37][CH2:38][CH2:39][CH2:40][O:41][CH2:42][C:43]3[CH:44]=[CH:45][CH:46]=[CH:47][CH:48]=3)[N:9]=2)[C:4]([CH3:7])=[CH:5][CH:6]=1

Participants

6

Reactant 3

HCID 11197766HCID 11197766, compoundHCID 67355477HCID 67355477, compoundHCID 178506676HCID 178506676, compound

Product 1

HCID 67354173HCID 67354173, compound

Reagents, catalysts & solvents 2

HCID 8028TetrahydrofuranSolventHCID 8058HexaneSolvent

Conditions

Temperature
-78 °C

Procedure

To a stirred solution at −78° C. containing 1.42 g (4.63 mmol) of 2-(2,5-dimethyl-1H-pyrrol-1-yl)-5-benzyloxy-4,6-dimethylpyridine (16) in 20 mL of anhydrous THF were added 5.15 mL (9.27 mmol) of a 1.8 M solution of PhLi in hexane followed by 1.45 g (4.63 mmol) of 9-bromo-1-(benzyloxy)nonane (1). The reaction mixture was stirred under argon atmosphere at −78° C. for 30 min. then the reaction mixture was warmed to room temperature slowly, and the reaction mixture was stirred 30 min. The reaction was quenched with saturated aqueous NaHCO3 and the poured into 150 mL of water. The mixture was then extracted with two portions of 150 mL of ethyl acetate. The combined organic solution was then washed with a portion of 100 mL of brine, dried (MgSO4) and then concentrated under diminished pressure. The residue was purified by chromatography on a silica gel column. Elution with hexanes-ethyl acetate 4:1 gave the expected product as light yellow oil: yield 1.22 g (49%) 1H-NMR (CDCl3) δ 7.54-7.37 (m, 10H), 6.93, (s, 1H), 5.94 (s, 2H), 4.95 (s, 2H), 4.55 (s, 2H), 3.52 (t, 2H, J=6.4), 2.91 (t, 2H, J=8.0) 2.39 (s, 3H), 2.51 (s, 6H), 1.82 (m, 2H), 1.65 (m, 2H), 1.33 (m, 12H); 13C-NMR (CDCl3) δ 155.94, 150.86, 146.89, 142.59, 138.80, 136.92, 128.69, 128.49, 128.38, 127.81, 127.65, 127.49, 121.75, 106.55, 75.30, 72.89, 70.55, 32.21, 29.85, 29.68, 29.63, 29.60, 29.59, 29.57, 29.53, 28.99, 26.27, 16.42, 13.30.

Workup

  1. temperaturethe reaction mixture was warmed to room temperature slowly
  2. stirringthe reaction mixture was stirred 30 min
  3. customThe reaction was quenched with saturated aqueous NaHCO3
  4. additionthe poured into 150 mL of water
  5. extractionThe mixture was then extracted with two portions of 150 mL of ethyl acetate
  6. washThe combined organic solution was then washed with a portion of 100 mL of brine
  7. dry with materialdried (MgSO4)
  8. concentrationconcentrated under diminished pressure
  9. customThe residue was purified by chromatography on a silica gel column
  10. washElution with hexanes-ethyl acetate 4:1

Sources & evidence

ORD record
ord-05fda82611704499800ec6848538a95c
Source dataset
uspto-grants-2015_02
Patent number
US08952025B2

Reaction notes

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