Dibutyltin oxide → 5-[4-(3-Fluoro-phenyl)-3-hydroxy-butyl]-1-[6-(2H-tetrazol-5-yl)-hexyl]-pyrrolidin-2-one

HRID 478865Notes

Reaction equation

HRID 478865 reaction equation
[F:1][C:2]1[CH:3]=[C:4]([CH2:8][CH:9]([OH:26])[CH2:10][CH2:11][CH:12]2[CH2:16][CH2:15][C:14](=[O:17])[N:13]2[CH2:18][CH2:19][CH2:20][CH2:21][CH2:22][CH2:23][C:24]#[N:25])[CH:5]=[CH:6][CH:7]=1.[N:27]([Si](C)(C)C)=[N+:28]=[N-:29].C([Sn](=O)CCCC)CCC>C1(C)C=CC=CC=1>[F:1][C:2]1[CH:3]=[C:4]([CH2:8][CH:9]([OH:26])[CH2:10][CH2:11][CH:12]2[N:13]([CH2:18][CH2:19][CH2:20][CH2:21][CH2:22][CH2:23][C:24]3[N:27]=[N:28][NH:29][N:25]=3)[C:14](=[O:17])[CH2:15][CH2:16]2)[CH:5]=[CH:6][CH:7]=1

Participants

5

Reactant 3

HCID 61221Dibutyltin oxideHCID 78378AzidotrimethylsilaneHCID 227187697-{2-[4-(3-Fluoro-phenyl)-3-hydroxy-butyl]-5-oxo-pyrrolidin-1-yl}-heptanenitrile

Product 1

HCID 101508285-[4-(3-Fluoro-phenyl)-3-hydroxy-butyl]-1-[6-(2H-tetrazol-5-yl)-hexyl]-pyrrolidin-2-oneYield 64.2%

Reagents, catalysts & solvents 1

HCID 1140TolueneSolvent

Procedure

Following the procedure described for Example 6, Step C, 7-{2-[4-(3-fluoro-phenyl)-3-hydroxy-butyl]-5-oxo-pyrrolidin-1-yl}-heptanenitrile (141.3 mg, 0.392 mmol) was reacted with azidotrimethylsilane (0.210 mL, 1.57 mmol) and dibutyltin oxide (29 mg, 0.116 mmol) in toluene (8 mL) heated under reflux for 72 h. Purification by medium pressure chromatography (CH2Cl2 to 2% MeOH in CH2Cl2 to 4% MeOH in CH2Cl2 to 6% MeOH in CH2Cl2) provided the title compound of Example 5C (101.5 mg). 1H NMR (CDCl3) δ7.26 (m, 1H), 6.94 (m, 3H), 3.87 (m, 1H), 3.70 (m, 1H), 3.52 (m, 1H), 2.98 (m, 3H), 2.78 (m, 2H), 2.48 (m, 2H), 2.20 (m, 1H), 1.89-1.24 (m, 14H); MS 404.2 (M+1), 401.9 (M−1).

Workup

  1. temperatureheated
  2. temperatureunder reflux for 72 h
  3. customPurification by medium pressure chromatography (CH2Cl2 to 2% MeOH in CH2Cl2 to 4% MeOH in CH2Cl2 to 6% MeOH in CH2Cl2)

Sources & evidence

ORD record
ord-937eedd6637447ea8030fc1c84ce2545
Source dataset
uspto-grants-2003_11
Patent number
US06642266B2

Reaction notes

Loading…