Trifluoroacetic acid → HCID 136121356, compound

Reaction equation

[F:1][C:2]1[CH:3]=[C:4]2[C:9](=[CH:10][CH:11]=1)[N:8]=[C:7]([C:12]1[CH:17]=[CH:16][CH:15]=[CH:14][C:13]=1[OH:18])[N:6]=[C:5]2[N:19]1[CH2:23][CH2:22][C@@H:21]([NH:24]C(=O)OC(C)(C)C)[CH2:20]1.C(O)(C(F)(F)F)=O.C([O-])(O)=O.[Na+]>C(Cl)Cl>[NH2:24][C@@H:21]1[CH2:22][CH2:23][N:19]([C:5]2[C:4]3[C:9](=[CH:10][CH:11]=[C:2]([F:1])[CH:3]=3)[N:8]=[C:7]([C:12]3[CH:17]=[CH:16][CH:15]=[CH:14][C:13]=3[OH:18])[N:6]=2)[CH2:20]1

Participants

Procedure

To a solution of tert-butyl(R)-1-(6-fluoro-2-(2-hydroxyphenyl)quinazolin-4-yl)pyrrolidin-3-ylcarbamate (480 mg, 1.11 mmol) in CH2Cl2 (10 mL) was added TFA (4 mL). The reaction was stirred for an hour, diluted with 10 mL CH2Cl2, and neutralized with a saturated aqueous NaHCO3 solution. The aqueous layer was extracted twice with CH2Cl2. The combined organic layers were dried over MgSO4, filtered, and concentrated. Purification via silica gel chromatography using 3-20% EtOAc/CH2Cl2 gave 2-(4-((R)-3-aminopyrrolidin-1-yl)-6-fluoroquinazolin-2-yl)phenol. LC/MS: m/z 325.5 (M+H)+ at 1.26 min (10%-99% CH3CN (0.035% TFA)/H2O (0.05% TFA)).