Water → HCID 9923369, compound

HRID 428718Notes

Reaction equation

[C:1]([C:3]1[CH:4]=[C:5]2[C:9](=[CH:10][CH:11]=1)[NH:8][C:7](=[O:12])/[C:6]/2=[CH:13]\[C:14]1[NH:15][CH:16]=[CH:17][CH:18]=1)#[CH:2].I[C:20]1[CH:25]=[CH:24][C:23]([OH:26])=[CH:22][CH:21]=1.O>CN(C)C=O.C(N(CC)CC)C.[Cu]I.Cl[Pd](Cl)([P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1)[P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1>[OH:26][C:23]1[CH:24]=[CH:25][C:20]([C:2]#[C:1][C:3]2[CH:4]=[C:5]3[C:9](=[CH:10][CH:11]=2)[NH:8][C:7](=[O:12])/[C:6]/3=[CH:13]\[C:14]2[NH:15][CH:16]=[CH:17][CH:18]=2)=[CH:21][CH:22]=1

Participants

Conditions

Temperature: 70 °C

Procedure

A solution of (Z)-1,3-dihydro-5-ethynyl-3-[(1H-pyrrol-2-yl)methylene]-2H-indol-2-one (100 mg, 0.43 mmol) (from Example 82) and 4-iodophenol (104 mg, 0.47 mmol) (Aldrich) in N,N-dimethylformamide (2 mL) and triethylamine (2 mL) was degassed by bubbling argon through the solution for 15 minutes. Copper(I) iodide (8 mg, 0.042 mmol) (Aldrich) and (Ph3P)2PdCl2 (25 mg, 0.021 mmol) (Aldrich) were added, and the reaction was heated at 70° C. for 16 hours. Water (15 mL) was then added and the precipitate was filtered off and dried. The product was purified via flash column chromatography (SiO2, 230-400 mesh) with ethyl acetate/hexane to give (Z)-1,3-dihydro-5-(4-hydroxyphenyl)ethynyl-3-[(1H-pyrrol-2-yl)methylene]-2H-indol-2-one as a yellow powder. (Yield 121 mg, 86%).

Workup

customby bubbling argon through the solution for 15 minutes
filtrationthe precipitate was filtered off
customdried
customThe product was purified via flash column chromatography (SiO2, 230-400 mesh) with ethyl acetate/hexane

Sources & evidence

ORD record: ord-41afd9451b19465db102f418896de19a
Source dataset: uspto-grants-2001_11
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US06313310B1

Reaction notes

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