Water → (R)-(1-(3'-aminobiphenyl-4-ylsulfonyl)pyrrolidin-2-yl)methanol

HRID 1665733Notes

Reaction equation

HRID 1665733 reaction equation
Br[C:2]1[CH:7]=[CH:6][C:5]([S:8]([N:11]2[CH2:15][CH2:14][CH2:13][C@@H:12]2[CH2:16][OH:17])(=[O:10])=[O:9])=[CH:4][CH:3]=1.[NH2:18][C:19]1[CH:20]=[C:21](B(O)O)[CH:22]=[CH:23][CH:24]=1.C(=O)([O-])[O-].[K+].[K+].O>CN(C=O)C.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[NH2:18][C:19]1[CH:24]=[C:23]([C:2]2[CH:7]=[CH:6][C:5]([S:8]([N:11]3[CH2:15][CH2:14][CH2:13][C@@H:12]3[CH2:16][OH:17])(=[O:10])=[O:9])=[CH:4][CH:3]=2)[CH:22]=[CH:21][CH:20]=1

Participants

7

Reactant 4

HCID 962WaterHCID 11430Potassium CarbonateHCID 922693-Aminophenylboronic acidHCID 59166148(R)-(1-(4-bromophenylsulfonyl)pyrrolidin-2-yl)methanol

Product 1

HCID 59206795(R)-(1-(3'-aminobiphenyl-4-ylsulfonyl)pyrrolidin-2-yl)methanolYield 49%

Reagents, catalysts & solvents 2

HCID 178418397HCID 178418397, compoundCatalystHCID 6228DimethylformamideSolvent

Conditions

Temperature
80 °C

Procedure

To a solution of (R)-[1-(4-bromo-benzenesulfonyl)-pyrrolidin-2-yl]-methanol (1.6 g, 5.0 mmol) in DMF (10 mL) was added 3-amino-phenyl boronic acid (0.75 g, 5.5 mmol), Pd(PPh3)4 (45 mg, 0.15 mmol), potassium carbonate (0.75 g, 5.5 mmol) and water (5 mL). The resulting mixture was degassed by gently bubbling argon through the solution for 5 minutes at 20° C. The reaction mixture was then heated at 80° C. overnight. The reaction was filtered through a pad of silica gel, which was washed with CH2Cl2 (25 mL×3). The combined organics were concentrated under reduced pressure to give the crude product, which was washed with EtOAc to give pure (R)-(1-(3′-aminobiphenyl-4-ylsulfonyl)pyrrolidin-2-yl)methanol (C-2) (810 mg, 49%). 1H NMR (300 MHz, CDCl3) δ 7.88 (d, J=8.7 Hz, 2 H), 7.70 (d, J=8.7 Hz, 2 H), 7.23-7.28 (m, 1 H), 6.98 (d, J=7.8 Hz, 1 H), 6.91 (d, J=1.8 Hz, 1 H), 6.74 (dd, J=7.8, 1.2 Hz, 1 H), 3.66-3.77 (m, 3 H), 3.45-3.53 (m, 1 H), 3.26-3.34 (m, 1 H), 1.68-1.88 (m, 3 H), 1.45-1.55 (m, 1 H). MS (ESI) m/e (M+H+) 333.0.

Workup

  1. customThe resulting mixture was degassed by gently bubbling argon through the solution for 5 minutes at 20° C
  2. filtrationThe reaction was filtered through a pad of silica gel, which
  3. washwas washed with CH2Cl2 (25 mL×3)
  4. concentrationThe combined organics were concentrated under reduced pressure
  5. customto give the crude product, which
  6. washwas washed with EtOAc

Sources & evidence

ORD record
ord-9ca5a5a5cd744bcd8a4c426e09d6a2a1
Source dataset
uspto-grants-2011_10
Patent number
US08039491B2

Reaction notes

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