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

HRID 537269Notes

Reaction equation

HRID 537269 reaction equation
[F:1][C:2]1[CH:7]=[CH:6][C:5]([N:8]2[C:12]3[CH:13]=[C:14]4[C@:19]([C:21]([C:23]5[CH:28]=[CH:27][CH:26]=[CH:25][N:24]=5)=[O:22])([CH2:20][C:11]=3[CH:10]=[N:9]2)[CH2:18][NH:17][CH2:16][CH2:15]4)=[CH:4][CH:3]=1.ClCCl.[F:32][C:33]1[CH:38]=[CH:37][C:36]([S:39](Cl)(=[O:41])=[O:40])=[CH:35][CH:34]=1.C(N(C(C)C)CC)(C)C>>[F:1][C:2]1[CH:7]=[CH:6][C:5]([N:8]2[C:12]3[CH:13]=[C:14]4[C@:19]([C:21]([C:23]5[CH:28]=[CH:27][CH:26]=[CH:25][N:24]=5)=[O:22])([CH2:20][C:11]=3[CH:10]=[N:9]2)[CH2:18][N:17]([S:39]([C:36]2[CH:37]=[CH:38][C:33]([F:32])=[CH:34][CH:35]=2)(=[O:41])=[O:40])[CH2:16][CH2:15]4)=[CH:4][CH:3]=1

Participants

5

Reactant 4

HCID 6344DichloromethaneHCID 95884-Fluorobenzenesulfonyl chlorideHCID 81531DiisopropylethylamineHCID 86709980(R)-(1-(4-fluorophenyl)-4,4a,5,6,7,8-hexahydro-1H-pyrazolo[3,4-g]isoquinolin-4a-yl)(pyridin-2-yl)methanone

Product 1

HCID 72548922(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

Procedure

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).

Workup

  1. concentrationThe reaction mixture was concentrated under reduced pressure
  2. customthe residue was purified by column chromatography on silica gel (gradient: 20-30% ethyl acetate in cyclohexane)

Sources & evidence

ORD record
ord-3e9cceb26d1541d4adaeb87425d52683
Source dataset
uspto-grants-2014_10
Patent number
US08859774B2

Reaction notes

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