[2-Chloromethyl-7-(3-trifluoromethyl-pyridin-2-yl)-quinazolin-4-yl]-(4-trifluoromethyl-phenyl)-amine hydrochloride → 2-(isopropoxymethyl)-N-(4-(trifluoromethyl)phenyl)-7-(3-(trifluoromethyl)pyridin-2-yl)quinazolin-4-amine
Reaction equation
Cl.Cl[CH2:3][C:4]1[N:13]=[C:12]([NH:14][C:15]2[CH:20]=[CH:19][C:18]([C:21]([F:24])([F:23])[F:22])=[CH:17][CH:16]=2)[C:11]2[C:6](=[CH:7][C:8]([C:25]3[C:30]([C:31]([F:34])([F:33])[F:32])=[CH:29][CH:28]=[CH:27][N:26]=3)=[CH:9][CH:10]=2)[N:5]=1.[O:35]([CH:37]([CH3:39])[CH3:38])[Na]>C(O)(C)C>[CH:37]([O:35][CH2:3][C:4]1[N:13]=[C:12]([NH:14][C:15]2[CH:20]=[CH:19][C:18]([C:21]([F:24])([F:23])[F:22])=[CH:17][CH:16]=2)[C:11]2[C:6](=[CH:7][C:8]([C:25]3[C:30]([C:31]([F:34])([F:33])[F:32])=[CH:29][CH:28]=[CH:27][N:26]=3)=[CH:9][CH:10]=2)[N:5]=1)([CH3:39])[CH3:38]Participants
4
Reactant 2
Product 1
Reagents, catalysts & solvents 1
Conditions
- Temperature
- 60 °C
Procedure
To a suspension of [2-chloromethyl-7-(3-trifluoromethyl-pyridin-2-yl)-quinazolin-4-yl]-(4-trifluoromethyl-phenyl)-amine hydrochloride (1.9 g, 0.0037 mol) in dry isopropanol (100 mL), add 20 equivalents of NaO-iPr (prepared from Na and isopropanol). Stir the pale yellow mixture at 60° C. for 5 hours, cool and evaporate the solvent under reduced pressure. Partition the residue between ethyl acetate and water and wash the organic layer with water (1×). Dry the organic layer (Na2SO4) and concentrate to give [2-isopropoxymethyl-7-(3-trifluoromethyl-pyridin-2-yl)-quinazolin-4-yl]-(4-trifluoromethyl-phenyl)-amine as a foam. IC50 in standard assay of capsaicin receptor activity is less than 10 nanomolar.
Workup
- temperaturecool
- customevaporate the solvent under reduced pressure
- customPartition the residue between ethyl acetate and water
- washwash the organic layer with water (1×)
- dry with materialDry the organic layer (Na2SO4)
- concentrationconcentrate
Sources & evidence
- ORD record
- ord-3ca62aad7730402eaa8497846edc0ca3
- Source dataset
- uspto-grants-2008_02
- Patent number
- US07329664B2
Reaction notes
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