Dibutyltin oxide → 5-(3-hydroxy-4-phenyl-butyl)-1-{3-[4-(2H-tetrazol-5-yl)-phenyl]-propyl}-pyrrolidin-2-one

HRID 352604Notes

Reaction equation

HRID 352604 reaction equation
[OH:1][CH:2]([CH2:22][C:23]1[CH:28]=[CH:27][CH:26]=[CH:25][CH:24]=1)[CH2:3][CH2:4][CH:5]1[CH2:9][CH2:8][C:7](=[O:10])[N:6]1[CH2:11][CH2:12][CH2:13][C:14]1[CH:21]=[CH:20][C:17]([C:18]#[N:19])=[CH:16][CH:15]=1.[N:29]([Si](C)(C)C)=[N+:30]=[N-:31].C([Sn](=O)CCCC)CCC>C1(C)C=CC=CC=1>[OH:1][CH:2]([CH2:22][C:23]1[CH:28]=[CH:27][CH:26]=[CH:25][CH:24]=1)[CH2:3][CH2:4][CH:5]1[N:6]([CH2:11][CH2:12][CH2:13][C:14]2[CH:15]=[CH:16][C:17]([C:18]3[N:29]=[N:30][NH:31][N:19]=3)=[CH:20][CH:21]=2)[C:7](=[O:10])[CH2:8][CH2:9]1

Participants

5

Reactant 3

HCID 61221Dibutyltin oxideHCID 78378AzidotrimethylsilaneHCID 227125194-{3-[2-(3-Hydroxy-4-phenyl-butyl)-5-oxo-pyrrolidin-1-yl]-propyl}-benzonitrile

Product 1

HCID 111660415-(3-hydroxy-4-phenyl-butyl)-1-{3-[4-(2H-tetrazol-5-yl)-phenyl]-propyl}-pyrrolidin-2-oneYield 82.3%

Reagents, catalysts & solvents 1

HCID 1140TolueneSolvent

Procedure

Analogous to the procedure described for Example 4A, Step E, 4-{3-[2-(3-hydroxy-4-phenyl-butyl)-5-oxo-pyrrolidin-1-yl]-propyl}-benzonitrile (157.8 mg, 0.419 mmol) was reacted with azidotrimethylsilane (0.11 mL, 0.84 mmol) and dibutyltin oxide (20 mg, 0.08 mmol) in toluene (8.6 mL) heated under reflux for 60 h. Purification by medium pressure chromatography (CH2Cl2 to 2% MeOH in CH2Cl2 to 4% MeOH in CH2Cl2 to 6% MeOH in CH2Cl2) provided 5-(3-hydroxy-4-phenyl-butyl)-1-{3-[4-(2H-tetrazol-5-yl)-phenyl]-propyl}-pyrrolidin-2-one (144.7 mg). 1H NMR (CDCl3) δ8.02 (m, 2H), 7.27 (m, 7H), 3.84 (m, 1H), 3.67 (m, 2H), 3.10 (m, 1H), 2.84 (m, 1H), 2.67 (m, 2H), 2.53 (m, 1H), 2.42 (m, 1H), 2.14 (m, 1H), 1.97-1.40 (m, 9H); MS 420.3 (M+1), 418.3 (M−1).

Workup

  1. temperatureheated
  2. temperatureunder reflux for 60 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-98fd55e4d38347ffae10eba5ea7f2222
Source dataset
uspto-grants-2004_06
Patent number
US06747054B2

Reaction notes

Loading…