Allyltributylstannane → HCID 22961885, compound

HRID 2305189Notes

Reaction equation

HRID 2305189 reaction equation
[C:1]([N:8]1[CH2:12][CH2:11][CH2:10][C@H:9]1[CH2:13][O:14][C:15]1[CH:16]=[N:17][C:18]([Cl:22])=[C:19](Br)[CH:20]=1)([O:3][C:4]([CH3:7])([CH3:6])[CH3:5])=[O:2].[CH2:23]([Sn](CCCC)(CCCC)CCCC)[CH:24]=[CH2:25]>C1(C)C=CC=CC=1.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>[CH2:25]([C:19]1[CH:20]=[C:15]([O:14][CH2:13][C@@H:9]2[CH2:10][CH2:11][CH2:12][N:8]2[C:1]([O:3][C:4]([CH3:7])([CH3:6])[CH3:5])=[O:2])[CH:16]=[N:17][C:18]=1[Cl:22])[CH:24]=[CH2:23]

Participants

5

Reactant 2

HCID 90628AllyltributylstannaneHCID 22872668HCID 22872668, compound

Product 1

HCID 22961885HCID 22961885, compoundYield 110.3%

Reagents, catalysts & solvents 2

HCID 178418397HCID 178418397, compoundCatalystHCID 1140TolueneSolvent

Procedure

3-(1-BOC-2-(S)-pyrrolidinylmethoxy)-5-bromo-6-chloropyridine (2.0 g, 5.14 mmol) in toluene (15 mL) was added tetrakis(triphenylphosphine)palladium (15 mg) and allyltributyltin (3.2 mL, 10.2 mmol). The mixture was stirred and refluxed for 16 h. Solvent was evaporated and the residue was chromatographed (silica gel; hexane/EtOAc, 5:1 to 1:1) to afford an oil (2.0 g, 100%): 1H NMR (CDCl3, 300 MHz) δ 1.24-1.40 (m, 2H), 1.46 (s, 9H), 1.62 (m, 1H), 1.88 (m, 1H), 2.02 (m, 1H), 3.38 (m, 1H), 3.45 (d, 2H, J=7.0 Hz), 3.90 (m, 1H), 4.16 (m, 2H), 5.10-5.20 (m, 2H), 5.94 (m, 1H), 7.14 (m, 1H), 7.96 (d, 1H, J=3.0 Hz); MS (CI/NH3) m/e 352 (M+H)+.

Workup

  1. temperaturerefluxed for 16 h
  2. customSolvent was evaporated
  3. customthe residue was chromatographed (silica gel; hexane/EtOAc, 5:1 to 1:1)

Sources & evidence

ORD record
ord-51e285b31b864c79a14c78f2186e33f9
Source dataset
uspto-grants-2002_08
Patent number
US06437138B1

Reaction notes

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