Dichloromethane → (R)-(1-(4-fluorophenyl)-6-((4-fluorophenyl)sulfonyl)-4,4a,5,6,7,8-hexahydro-1H-pyrazolo[3,4-g]isoquinolin-4a-yl)(pyridin-2-yl)methanone

Participants

Reaction Steps

A solution of (R)-(1-(4-fluorophenyl)-4,4a,5,6,7,8-hexahydro-1H-pyrazolo[3,4-g]isoquinolin-4a-yl)(pyridin-2-yl)methanone in dichloromethane (2.5 ml) (2.7 mL, ˜0.2 mmol) containing disiopropylethylamine (174 μL, 1 mmol) was added to 4-fluoro-phenyl sulfonyl chloride (48 mg, 0.25 mmol) and diisopropylethylamine (100 μL, 0.57 mmol) and the mixture stirred for 1.25 hours. The reaction mixture was concentrated under reduced pressure and the residue was purified by column chromatography on silica gel (gradient: 20-30% ethyl acetate in cyclohexane) to afford (R)-(1-(4-fluorophenyl)-6-((4-fluorophenyl)sulfonyl)-4,4a,5,6,7,8-hexahydro-1H-pyrazolo[3,4-g]isoquinolin-4a-yl)(pyridin-2-yl)methanone as a white solid (72 mg). LCMS (Method D, ESI): RT 5.32 min, m+H=533.0; 1H NMR (400 MHz, CDCl3): δ 8.62-8.63 (m, 1 H); 7.85-7.86 (m, 2 H); 7.69-7.70 (m, 2 H); 7.44-7.45 (m, 3 H); 7.28 (s, 1 H); 7.14 (dt, J=12.9, 8.5 Hz, 4 H); 6.48 (d, J=2.2 Hz, 1 H); 5.51 (dd, J=12.2, 2.1 Hz, 1 H); 4.29 (d, J=16.9 Hz, 1 H); 3.82-3.86 (m, 1 H); 2.84-2.86 (m, 2 H); 2.72 (d, J=12.2 Hz, 1 H); 2.46-2.51 (m, 2 H).

Provenance & Evidence