Potassium Carbonate → HCID 9797111, compound

HRID 380978Notes

Reaction equation

Br[C:2]1[CH:7]=[CH:6][C:5]([CH:8]([CH3:15])[CH2:9][NH:10][S:11]([CH3:14])(=[O:13])=[O:12])=[CH:4][CH:3]=1.[CH3:16][O:17][C:18]1[CH:23]=[CH:22][CH:21]=[CH:20][C:19]=1B(O)O.C(=O)([O-])[O-].[K+].[K+]>O1CCOCC1.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>[CH3:16][O:17][C:18]1[CH:23]=[CH:22][CH:21]=[CH:20][C:19]=1[C:2]1[CH:7]=[CH:6][C:5]([CH:8]([CH3:15])[CH2:9][NH:10][S:11]([CH3:14])(=[O:13])=[O:12])=[CH:4][CH:3]=1

Participants

Conditions

Temperature: 100 °C

Procedure

To a degassed solution of 1.0 g (3.4 mmol) of material from Example 1, 0.8 g (5.1 mmol) of 2-methoxybenzeneboronic acid and 0.7 g (5.1 mmol) of potassium carbonate in 15 mL of dioxane and 5 mL of water was added 0.2 g (0.2 mmol) of tetrakis(triphenylphosphine)palladium(0). The mixture was heated to 100° C. for 16 hours. The reaction mixture was cooled to ambient temperature, diluted with 10 mL of water and extracted three times with ethyl acetate. The combined organics were dried (MgSO4), filtered and concentrated in vacuo. Chromatography on 50 g silica gel (35% ethyl acetate/hexane) afforded 1.0 g (90%) of the title compound as a viscous oil.

Workup

temperatureThe reaction mixture was cooled to ambient temperature
extractionextracted three times with ethyl acetate
dry with materialThe combined organics were dried (MgSO4)
filtrationfiltered
concentrationconcentrated in vacuo

Sources & evidence

ORD record: ord-63c9b35db75d497b98af53250e67e831
Source dataset: uspto-grants-2001_10
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US06303816B1

Reaction notes

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