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

HRID 504339Notes

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.C(P(C(C)(C)C)C(C)(C)C)(C)(C)C.[CH3:45][N:46]1[CH:50]=[CH:49][C:48](B(O)O)=[N:47]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.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.[Pd].[Pd]>[CH3:45][N:46]1[CH:50]=[CH:49][C:48]([C:2]2[CH:7]=[CH:6][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:4][CH:3]=2)=[N:47]1

Participants

Conditions

Temperature: 120 °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, example 238) in tetrahydrofuran (0.2 mL, 0.002 mol) were added tris(dibenzylideneacetone)dipalladium(0) (0.2 mg, 0.0000002 mol), tri-tert-butylphosphine (0.12 mg, 5.8×10−7 mol), (1-methyl-1H-pyrazol-3-yl)boronic acid (6.8 mg, 0.0000534 mol). The mixture was heated at 120° C. under microwave for 30 minutes. The reaction mixture then was filtered and the filtrate was diluted with methanol and purified with prep-HPLC to afford the desired product. LC/MS: 414.2 (M+H+).

Workup

filtrationThe reaction mixture then was filtered
additionthe filtrate was diluted with methanol
custompurified with prep-HPLC

Sources & evidence

ORD record: ord-a517323ff13540ec816d40b5380d0829
Source dataset: uspto-grants-2010_08
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07776874B2

Reaction notes

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