Sodium Carbonate → 1,3-dihydro-4-(4-hydroxy-but-1-enyl)-3-[(3-methoxy-1H-pyrrol-2-yl)methylene]-indol-2-one

HRID 380857Notes

Reaction equation

I[C:2]1[C:10]([N+]([O-])=O)=[CH:9][CH:8]=[C:7]2[C:3]=1/[C:4](=[CH:15]/[C:16]1[NH:17][CH:18]=[CH:19][C:20]=1[O:21][CH3:22])/[C:5](=[O:14])[NH:6]2.[OH:23][CH2:24][CH2:25][CH:26]=[CH:27]B(O)O.C([O-])([O-])=O.[Na+].[Na+]>C(COC)OC.O.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[OH:23][CH2:24][CH2:25][CH:26]=[CH:27][C:2]1[CH:10]=[CH:9][CH:8]=[C:7]2[C:3]=1[C:4](=[CH:15][C:16]1[NH:17][CH:18]=[CH:19][C:20]=1[O:21][CH3:22])[C:5](=[O:14])[NH:6]2

Participants

Conditions

Temperature: 85 °C

Procedure

To a stirred solution of (Z)-1,3-dihydro-4-iodo-3-[(3-methoxy-1H-pyrrol-2-yl)methylene]-2H-indol-2-one (50 mg, 0.14 mmol) (Starting Material 2) in dimethoxyethane (5 mL) was added 4-hydroxy-1-butenyl-boronic acid (48 mg, 0.418 mmol) (from Example 68 above), tetrakis(triphenylphosphine)palladium(0) (39 mg, 0.034 mmol) (Aldrich) and 2M Na2CO3 solution in H2O (0.34 mL). The reaction mixture was stirred at 85° C. overnight in a pressure tube. The solvent was removed in vacuo, and the residue was purified by silica gel chromatography (Hex:EtOAc=5:1) to provide 1,3-dihydro-4-(4-hydroxy-but-1-enyl)-3-[(3-methoxy-1H-pyrrol-2-yl)methylene]-indol-2-one as a yellow solid. (Yield 21 mg, 50%).

Workup

customThe solvent was removed in vacuo
customthe residue was purified by silica gel chromatography (Hex:EtOAc=5:1)

Sources & evidence

ORD record: ord-4433fd9699e947cf998cb3581c4e9bc8
Source dataset: uspto-grants-2001_10
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US06303793B1

Reaction notes

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