3-(Carboxymethyl)benzeneboronic acid → [2'-(1-tert-Butoxycarbonylamino-ethyl)-5'-(pyridin-4-ylcarbamoyl)-biphenyl-3-yl]-acetic acid

HRID 1403665Notes

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][C:31]1[CH:32]=[C:33](B(O)O)[CH:34]=[CH:35][CH:36]=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:35]1[CH:34]=[CH:33][CH:32]=[C:31]([CH2:30][C:27]([OH:29])=[O:28])[CH:36]=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 (1951 μmol) in a mixture of DME/EtOH/2N Na2CO3: 1/1/1 (10 ml) were added 3-carboxymethylphenylboronic 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-7ff7fb8da371437fbade0991adf50876
Source dataset: uspto-grants-2014_12
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08912209B2

Reaction notes

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