2-Bromopyridine → (Z)-1,3-dihydro-3-[(3-methoxy-1H-pyrrol-2-yl)methylene]-4-[(2-pyridinyl)ethynyl]-2H-indol-2-one

HRID 428703Notes

Reaction equation

HRID 428703 reaction equation
Br[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][N:3]=1.[C:8]([C:10]1[CH:18]=[CH:17][CH:16]=[C:15]2[C:11]=1/[C:12](=[CH:20]/[C:21]1[NH:22][CH:23]=[CH:24][C:25]=1[O:26][CH3:27])/[C:13](=[O:19])[NH:14]2)#[CH:9]>[Cu]I.CN(C=O)C.CCN(CC)CC>[CH3:27][O:26][C:25]1[CH:24]=[CH:23][NH:22][C:21]=1/[CH:20]=[C:12]1\[C:13](=[O:19])[NH:14][C:15]2[C:11]\1=[C:10]([C:8]#[C:9][C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][N:3]=1)[CH:18]=[CH:17][CH:16]=2

Participants

6

Reactant 2

HCID 79732-BromopyridineHCID 59970997(Z)-1,3-dihydro-4-ethynyl-3-[(3-methoxy-1H-pyrrol-2-yl)methylene]-2H-indol-2-one2×

Product 1

HCID 9967819(Z)-1,3-dihydro-3-[(3-methoxy-1H-pyrrol-2-yl)methylene]-4-[(2-pyridinyl)ethynyl]-2H-indol-2-one

Reagents, catalysts & solvents 3

HCID 24350Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)CatalystHCID 6228DimethylformamideSolventHCID 8471TriethylamineSolvent

Procedure

Using Method J above, 2-bromopyridine (44.9 mg, 0.28 mmol) (Aldrich) was coupled with (Z)-1,3-dihydro-4-ethynyl-3-[(3-methoxy-1H-pyrrol-2-yl)methylene]-2H-indol-2-one (Starting Material 5) (50 mg, 0.19 mmol) using DPPFPdCl2 (7.7 mg) (Aldrich) and CuI (2 mg) (Aldrich) as catalyst in DMF (3 mL) and Et3N (3 mL) as solvent and heating at reflux for 2 days, yielding (Z)-1,3-dihydro-3-[(3-methoxy-1H-pyrrol-2-yl)methylene]-4-[(2-pyridinyl)ethynyl]-2H-indol-2-one. (Yield 30 mg, 47%).

Workup

  1. temperatureat reflux for 2 days

Sources & evidence

ORD record
ord-d15334154f9f4de69dc2f2e13367fde6
Source dataset
uspto-grants-2001_11
Patent number
US06313310B1

Reaction notes

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