Water → HCID 66696242, compound

HRID 1396671Notes

Reaction equation

Br[C:2]1[CH:3]=[C:4]2[CH2:10][CH2:9][N:8]([C:11]([O:13][C:14]([CH3:17])([CH3:16])[CH3:15])=[O:12])[C:5]2=[N:6][CH:7]=1.C(=O)([O-])[O-].[K+].[K+].O1CCO[CH2:26][CH2:25]1.O.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.C(OCC)(=O)C>[CH:25]([C:2]1[CH:3]=[C:4]2[CH2:10][CH2:9][N:8]([C:11]([O:13][C:14]([CH3:17])([CH3:16])[CH3:15])=[O:12])[C:5]2=[N:6][CH:7]=1)=[CH2:26]

Participants

Conditions

Temperature: 80 °C

Procedure

Under an argon atmosphere, to a mixture of 1100 mg of tert-butyl 5-bromo-2,3-dihydro-1H-pyrrolo[2,3-b]pyridine-1-carboxylate, 1062 mg of a 2,4,6-trivinylboroxine/pyridine complex, 1020 mg of potassium carbonate, 3 mL of 1,4-dioxane/water (4/1) was added 215 mg of tetrakis(triphenylphosphine)palladium. The reaction mixture was stirred at 80° C. overnight. To the reaction mixture were added water and ethyl acetate and the aqueous layer was separated. The organic layer was washed with saturated brine and dried over anhydrous magnesium sulfate, and the solvent was evaporated under reduced pressure. The residue was purified by silica gel column chromatography (n-hexane/ethyl acetate) to obtain 783 mg of tert-butyl 5-vinyl-2,3-dihydro-1H-pyrrolo[2,3-b]pyridine-1-carboxylate as a yellow oil.

Workup

customthe aqueous layer was separated
washThe organic layer was washed with saturated brine
dry with materialdried over anhydrous magnesium sulfate
customthe solvent was evaporated under reduced pressure
customThe residue was purified by silica gel column chromatography (n-hexane/ethyl acetate)

Sources & evidence

ORD record: ord-e202ce7fed3441e8be0810f56016e586
Source dataset: uspto-grants-2014_12
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08901126B2

Reaction notes

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