Sodium Carbonate → HCID 18363874, compound

HRID 382028Notes

Reaction equation

HRID 382028 reaction equation
I[C:2]1[CH:10]=[CH:9][CH:8]=[C:7]2[C:3]=1/[C:4](=[CH:12]/[C:13]1[NH:14][CH:15]=[CH:16][CH:17]=1)/[C:5](=[O:11])[NH:6]2.C([O-])([O-])=O.[Na+].[Na+].[OH:24][C:25]1[CH:30]=[CH:29][C:28](B(O)O)=[CH:27][CH:26]=1>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.COCCOC>[OH:24][C:25]1[CH:30]=[CH:29][C:28]([C:2]2[CH:10]=[CH:9][CH:8]=[C:7]3[C:3]=2/[C:4](=[CH:12]/[C:13]2[NH:14][CH:15]=[CH:16][CH:17]=2)/[C:5](=[O:11])[NH:6]3)=[CH:27][CH:26]=1

Participants

6

Reactant 3

HCID 10340Sodium CarbonateHCID 27343604-Hydroxyphenylboronic acidHCID 15548052(Z)-1,3-dihydro-4-iodo-3-[(1H-pyrrol-2-yl)methylene]-indol-2-one2×

Product 1

HCID 18363874HCID 18363874, compoundYield 79%

Reagents, catalysts & solvents 2

HCID 178418397HCID 178418397, compoundCatalystHCID 80711,2-DimethoxyethaneSolvent

Procedure

A solution of (Z)-1,3-dihydro-4-iodo-3-[(1H-pyrrol-2-yl)methylene]-2H-indol-2-one (45 mg, 0.134 mmol) (Starting Material 1), 2M aqueous Na2CO3 solution (134 μL , 0.268 mmol), (Ph3P)4Pd (5 mg, 0.004 mmol) (Aldrich), and 4-hydroxyphenylboronic acid (37 mg, 0.268 mmol) (prepared according to H. Gilman et al., J. Am. Chem. Soc. 79:3077-3081 (1957)) in 3 mL of a 3:1 mixture of 1,2-dimethoxyethane:distilled water was heated at reflux under a nitrogen atmosphere for 15 h. The reaction mixture was allowed to cool to room temperature and then directly purified by flash chromatography (Merck Silica gel 60, 230-400 mesh, 35% ethyl acetate-hexanes elution) to yield pure (Z)-1,3-dihydro-4-(4-hydroxyphenyl)-3-[(1H-pyrrol-2-yl)methylene]-2H-indol-2-one (yield: 32 mg, 79%) as a yellow solid (mp 271-273° C.).

Workup

  1. distillationdistilled water
  2. temperaturewas heated
  3. temperatureat reflux under a nitrogen atmosphere for 15 h
  4. customdirectly purified by flash chromatography (Merck Silica gel 60, 230-400 mesh, 35% ethyl acetate-hexanes elution)

Sources & evidence

ORD record
ord-53cecb8f511349ca920ad8b58817e993
Source dataset
uspto-grants-2001_10
Patent number
US06307056B1

Reaction notes

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