Toluene → HCID 86601637, compound
Reaction equation
[C:1]([N:8]1[CH2:31][CH2:30][C@@:15]23[C:16]4[CH:17]=[C:18]([O:23][C:24](=[O:29])[C:25]([CH3:28])([CH3:27])[CH3:26])[CH:19]=[CH:20][C:21]=4[CH2:22][C@@H:9]1[C@@H:10]2[CH2:11][CH2:12][CH2:13][CH2:14]3)(OC(C)(C)C)=O.O1CCO[CH2:34][CH2:33]1.Cl.C(Br)C#C.C1(C)C=CC=CC=1>C(Cl)Cl>[CH2:1]([N:8]1[CH2:31][CH2:30][C@@:15]23[C:16]4[CH:17]=[C:18]([O:23][C:24](=[O:29])[C:25]([CH3:27])([CH3:28])[CH3:26])[CH:19]=[CH:20][C:21]=4[CH2:22][C@@H:9]1[C@@H:10]2[CH2:11][CH2:12][CH2:13][CH2:14]3)[C:33]#[CH:34]Participants
Reactant 4
Product 1
Reagents, catalysts & solvents 1
Conditions
- Temperature
- 0 °C
Procedure
To a solution of compound 31 (5 mg, 0.012 mmol) in dry CH2Cl2 (0.2 mL) was added 4 M HCl dioxane solution (0.5 mL) and the mixture stirred for 2 h at 0° C. Solvent was evaporated under reduced pressure. The crude amine salt 32 was dissolved in CH2Cl2 (0.5 mL) and to the mixture was slowly added 80 wt % propargyl bromide solution in toluene (2 μL, 0.020 mmol) and TEA (9 μL, 0.064 mmol) at 0° C. After 4 h stirring, the reaction mixture was concentrated under reduced pressure. The crude product was purified on a silica gel column chromatography (1:1 n-Hexane/EtOAc) to give a colorless oil (3 mg, 68% yield): 1H NMR (300 MHz, CDCl3) 1.15˜1.87 (m, 20H); 2.14˜2.31 (m, 2H); 2.67˜2.74 (m, 2H); 3.02 (d, J=18.6 Hz, 1H); 3.12˜3.14 (m, 1H); 3.36˜3.39 (m, 2H); 6.81˜6.93 (m, 2H); 7.16 (d, J=8.2 Hz, 1H).
Workup
- customSolvent was evaporated under reduced pressure
- dissolutionThe crude amine salt 32 was dissolved in CH2Cl2 (0.5 mL) and to the mixture
- customat 0° C
- stirringAfter 4 h stirring
- concentrationthe reaction mixture was concentrated under reduced pressure
- customThe crude product was purified on a silica gel column chromatography (1:1 n-Hexane/EtOAc)
Sources & evidence
- ORD record
- ord-1de9ad7623554592af766deae1c8d404
- Source dataset
- uspto-grants-2010_04
- Patent number
- US07691874B2
Reaction notes
Loading…