Tetrahydrofuran → (1R)-1'-({1-[4-(3,5-dimethylisoxazol-4-yl)phenyl]cyclopropyl}carbonyl)-3H-spiro[2-benzofuran-1,3'-pyrrolidin]-3-one

HRID 2275557Notes

Reaction equation

HRID 2275557 reaction equation
Br[C:2]1[CH:7]=[CH:6][C:5]([C:8]2([C:11]([N:13]3[CH2:17][CH2:16][C@@:15]4([C:21]5[CH:22]=[CH:23][CH:24]=[CH:25][C:20]=5[C:19](=[O:26])[O:18]4)[CH2:14]3)=[O:12])[CH2:10][CH2:9]2)=[CH:4][CH:3]=1.O1CCCC1.[CH3:32][C:33]1[C:37](B2OC(C)(C)C(C)(C)O2)=[C:36]([CH3:47])[O:35][N:34]=1.C(P(C(C)(C)C)C(C)(C)C)(C)(C)C.[F-].[K+]>C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.[Pd].[Pd]>[CH3:32][C:33]1[C:37]([C:2]2[CH:3]=[CH:4][C:5]([C:8]3([C:11]([N:13]4[CH2:17][CH2:16][C@@:15]5([C:21]6[CH:22]=[CH:23][CH:24]=[CH:25][C:20]=6[C:19](=[O:26])[O:18]5)[CH2:14]4)=[O:12])[CH2:10][CH2:9]3)=[CH:6][CH:7]=2)=[C:36]([CH3:47])[O:35][N:34]=1

Participants

7

Reactant 5

HCID 8028TetrahydrofuranHCID 83681Tris(1,1-dimethylethyl)phosphineHCID 522689Potassium FluorideHCID 27586563,5-Dimethylisoxazole-4-boronic acid pinacol esterHCID 66661876(1R)-1'-{[1-(4-bromophenyl)cyclopropyl]-carbonyl}-3H-spiro[2-benzofuran-1,3'-pyrrolidin]-3-one

Product 1

HCID 66661768(1R)-1'-({1-[4-(3,5-dimethylisoxazol-4-yl)phenyl]cyclopropyl}carbonyl)-3H-spiro[2-benzofuran-1,3'-pyrrolidin]-3-one

Reagents, catalysts & solvents 1

HCID 9811564Bis(dibenzylideneacetone)palladiumCatalyst

Conditions

Temperature
150 °C

Procedure

To a solution of (1R)-1′-{[1-(4-bromophenyl)cyclopropyl]carbonyl}-3H-spiro[2-benzofuran-1,3′-pyrrolidin]-3-one (20 mg, 0.00005 mol) in tetrahydrofuran (1.0 mL, 0.012 mol) were added 3,5-dimethyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)isoxazole (11.9 mg, 0.0000534 mol), tris(dibenzylideneacetone)dipalladium(0) (0.2 mg, 0.0000002 mol), tri-tert-butylphosphine (0.12 mg, 5.8 E-7 mol) and potassium fluoride (93 mg, 0.00016 mol), and the resulting mixture was heated at 150 Celsius under microwave for 50 minutes. The mixture then was cooled down to r.t. and filtered. The filtrate was diluted with methanol, and the desired compound was obtained by revised phase prep-HPLC. MS (ESI): 429.2 (M+H+).

Workup

  1. temperatureThe mixture then was cooled down to r.t.
  2. filtrationfiltered
  3. additionThe filtrate was diluted with methanol

Sources & evidence

ORD record
ord-643b4c25f83b4dd1af34b3b5aef68b1f
Source dataset
uspto-grants-2015_09
Patent number
US09126927B2

Reaction notes

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