3-Methyl-1-pentyn-3-ol → rac-(Z)-1,3-dihydro-4-(3-hydroxy-3-methyl-1-pentynyl)-3-[(3-methoxy-1H-pyrrol-2-yl)methylene]-2H-indol-2-one

HRID 366644Notes

Reaction equation

HRID 366644 reaction equation
[CH3:1][C:2]([OH:7])([CH2:5][CH3:6])[C:3]#[CH:4].Br[C:9]1[CH:17]=[CH:16][CH:15]=[C:14]2[C:10]=1/[C:11](=[CH:19]/[C:20]1[NH:21][CH:22]=[CH:23][C:24]=1[O:25][CH3:26])/[C:12](=[O:18])[NH:13]2>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.CN(C=O)C.CCN(CC)CC>[OH:7][C:2]([CH3:1])([CH2:5][CH3:6])[C:3]#[C:4][C:9]1[CH:17]=[CH:16][CH:15]=[C:14]2[C:10]=1/[C:11](=[CH:19]/[C:20]1[NH:21][CH:22]=[CH:23][C:24]=1[O:25][CH3:26])/[C:12](=[O:18])[NH:13]2

Participants

6

Reactant 2

HCID 64943-Methyl-1-pentyn-3-olHCID 18359254(Z)-4-bromo-1,3-dihydro-3-[(3-methoxy-1H-pyrrol-2-yl)methylene]-2H-indol-2-one2×

Product 1

HCID 59959869rac-(Z)-1,3-dihydro-4-(3-hydroxy-3-methyl-1-pentynyl)-3-[(3-methoxy-1H-pyrrol-2-yl)methylene]-2H-indol-2-one

Reagents, catalysts & solvents 3

HCID 178418476HCID 178418476, compoundCatalystHCID 6228DimethylformamideSolventHCID 8471TriethylamineSolvent

Procedure

Using Method D above, 3-methyl-1-pentyn-3-ol (75 mg, 0.75 mmol) (Aldrich) was coupled with (Z)-4-bromo-1,3-dihydro-3-[(3-methoxy-1H-pyrrol-2-yl)methylene]-2H-indol-2-one (Starting Material 1 supra) (200 mg, 0.63 mmol) using (Ph3P)2PdCl2 (25 mg) and Cul (12 mg) as catalyst in DMF (3 mL) and Et3N (3 mL) as solvent at 70° C. for 17 h to yield rac-(Z)-1,3-dihydro-4-(3-hydroxy-3-methyl-1-pentynyl)-3-[(3-methoxy-1H-pyrrol-2-yl)methylene]-2H-indol-2-one. (Yield 66 mg, 31%).

Sources & evidence

ORD record
ord-8a58513fb6d041d490d2ab3f9105a571
Source dataset
uspto-grants-2000_10
Patent number
US06130239

Reaction notes

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