3-(2-Carboxyethyl)phenylboronic acid → 3-[2'-(1-tert-Butoxycarbonylamino-ethyl)-5'-(pyridin-4-ylcarbamoyl)-biphenyl-3-yl]-propionic acid

HRID 2409365Notes

Reaction equation

[C:1]([O:5][C:6](=[O:26])[NH:7][CH:8]([C:10]1[CH:15]=[CH:14][C:13]([C:16](=[O:24])[NH:17][C:18]2[CH:23]=[CH:22][N:21]=[CH:20][CH:19]=2)=[CH:12][C:11]=1Br)[CH3:9])([CH3:4])([CH3:3])[CH3:2].[C:27]([CH2:30][CH2:31][C:32]1[CH:33]=[C:34](B(O)O)[CH:35]=[CH:36][CH:37]=1)([OH:29])=[O:28]>COCCOC.CCO.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:1]([O:5][C:6]([NH:7][CH:8]([C:10]1[CH:15]=[CH:14][C:13]([C:16](=[O:24])[NH:17][C:18]2[CH:23]=[CH:22][N:21]=[CH:20][CH:19]=2)=[CH:12][C:11]=1[C:34]1[CH:35]=[CH:36][CH:37]=[C:32]([CH2:31][CH2:30][C:27]([OH:29])=[O:28])[CH:33]=1)[CH3:9])=[O:26])([CH3:4])([CH3:3])[CH3:2]

Participants

Conditions

Temperature: 160 °C

Procedure

To a solution of {1-[2-bromo-4-(pyridine-4-ylcarbamoyl)-phenyl]-ethyl}-carbamic acid tert-butyl ester (3122 μmol) in a mixture of DME/EtOH/2N Na2CO3: 1/1/1 (20 ml) were added 3-carboxyethylphenylboronic acid (1.5 eq) and Pd tetrakis (0.05 eq). The reaction mixture was heated in the microwave at 160° C. for 15 minutes. The reaction mixture was cooled to RT, filtered over celite and washed with EtOAc and MeOH. The solvents were removed under reduced pressure. The compound was purified by column chromatography (silicagel, DCM/MeOH gradient).

Workup

temperatureThe reaction mixture was cooled to RT
filtrationfiltered over celite
washwashed with EtOAc and MeOH
customThe solvents were removed under reduced pressure
customThe compound was purified by column chromatography (silicagel, DCM/MeOH gradient)

Sources & evidence

ORD record: ord-d0257c6fe70e48c58378d16c13d245ca
Source dataset: uspto-grants-2014_08
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08815873B2

Reaction notes

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