Methanol → (R)-2-Methyl-1-oxo-1-(1-(4-(trifluoromethyl)phenyl)-3,4-dihydroisoquinolin-2(1H)-yl)propan-2-yl acetate

To a solution of (R)-1-(4-(trifluoromethyl)phenyl)-1,2,3,4-tetrahydroisoquinoline (207 mg, 747 μmol, example 30 (step 1) and DIEA (130 μL, 747 μmol) in DCM (2.5 mL) was added 1-chlorocarbonyl-1-methylethyl acetate (119 μL, 821 μmol). The mixture was stirred at RT for 3 h. Then, 1-chlorocarbonyl-1-methylethyl acetate (50 μL) was added and the mixture was stirred at RT for 16 h. MeOH (1 mL) was added and the mixture was filtered. The filtrate was purified by preparative HPLC (0%-100% MeCN 0.1% TFA/water 0.1% TFA) to give the title compound in a solution of H2O 0.1% TFA and MeCN 0.1% TFA. The solvent was removed and saturated NaHCO3 (5 mL) was added. The mixture was extracted with EtOAc (2×30 mL). The combined organic extracts were dried over MgSO4, concentrated, and dried in vacuo to give the title compound as a white solid. MS (ESI, positive ion) m/z: 406 (M+H).

1. stirringthe mixture was stirred at RT for 16 h
2. filtrationthe mixture was filtered
3. customThe filtrate was purified by preparative HPLC (0%-100% MeCN 0.1% TFA/water 0.1% TFA)

ORDレコード

ord-1788a70662394664921c8942a9e49528

出典データセット

uspto-grants-2013_07

DOI

10.6084/m9.figshare.5104873.v1

特許番号

US08476297B2