Sodium Carbonate → tert-Butyl 6-(pyridin-4-yl)indoline-1-carboxylate

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Reaktionsgleichung

Br[C:2]1[CH:10]=[C:9]2[C:5]([CH2:6][CH2:7][N:8]2[C:11]([O:13][C:14]([CH3:17])([CH3:16])[CH3:15])=[O:12])=[CH:4][CH:3]=1.[N:18]1[CH:23]=[CH:22][C:21](B(O)O)=[CH:20][CH:19]=1.C(=O)([O-])[O-].[Na+].[Na+]>[Pd].C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.CN(C=O)C>[N:18]1[CH:23]=[CH:22][C:21]([C:2]2[CH:10]=[C:9]3[C:5]([CH2:6][CH2:7][N:8]3[C:11]([O:13][C:14]([CH3:17])([CH3:16])[CH3:15])=[O:12])=[CH:4][CH:3]=2)=[CH:20][CH:19]=1

Komponenten

Reaktionsbedingungen

Temperatur: 70 °C

Versuchsvorschrift

To a 20 ml vial was added tert-butyl 6-bromoindoline-1-carboxylate 50.A (500 mg, 1.7 mmole), 4-pyridylboronic acid (309 mg, 2.5 mmol), tetrakis(triphenylphosphine) palladium(388, 0.34 mmol), DMF and 3 ml of saturated sodium carbonate. The reaction was stirred at 70° C. for 6 hours at which time the reaction mixture was partitioned between 300 ml EtAc and 200 ml of water. The organic solvent was removed by rotary evaporation and the crude product purified by reverse phase preparative HPLC to give tert-butyl 6-(pyridin-4-yl)indoline-1-carboxylate 50.B as a yellow solid (202 mg, 41% yield).

Aufarbeitung

customwas partitioned between 300 ml EtAc and 200 ml of water
customThe organic solvent was removed by rotary evaporation
customthe crude product purified by reverse phase preparative HPLC

Quellen und Nachweise

ORD-Eintrag: ord-42a8990ab842480da2e9a5031f646b37
Quelldatensatz: uspto-grants-2014_07
DOI: 10.6084/m9.figshare.5104873.v1
Patentnummer: US08785468B2

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