Allyltributylstannane → HCID 22961883, compound

HRID 365908Notes

Reaction equation

HRID 365908 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 22872666HCID 22872666, compound

Product 1

HCID 22961883HCID 22961883, compoundYield 73%

Reagents, catalysts & solvents 2

HCID 178418397HCID 178418397, compoundCatalystHCID 1140TolueneSolvent

Procedure

3-(1-BOC-2-(R)-pyrrolidinylmethoxy)-5-bromo-6-chloropyridine (1.0 g, 2.57 mmol) in toluene (10 mL) was added tetrakis(triphenylphosphine)palladium (15 mg) and allyltributyltin (1.6 mL, 5.1 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 (660 mg, 73%): 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/z 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-8b8fa4faecf747ecad23ff46cf5306bf
Source dataset
uspto-grants-2000_10
Patent number
US06127386

Reaction notes

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