Phosgene → {2'-[3-(4-Chloro-benzyl)-1-ethyl-ureidomethyl]-4'-fluoro-6-methoxy-biphenyl-3-yl}-acetic acid ethyl ester

HRID 2197376Notes

Reaction equation

[CH2:1]([O:3][C:4](=[O:25])[CH2:5][C:6]1[CH:7]=[C:8]([C:14]2[CH:19]=[CH:18][C:17]([F:20])=[CH:16][C:15]=2[CH2:21][NH:22][CH2:23][CH3:24])[C:9]([O:12][CH3:13])=[CH:10][CH:11]=1)[CH3:2].C(N(C(C)C)CC)(C)C.[C:35](Cl)(Cl)=[O:36].[Cl:39][C:40]1[CH:47]=[CH:46][C:43]([CH2:44][NH2:45])=[CH:42][CH:41]=1>C(Cl)Cl>[CH2:1]([O:3][C:4](=[O:25])[CH2:5][C:6]1[CH:7]=[C:8]([C:14]2[CH:19]=[CH:18][C:17]([F:20])=[CH:16][C:15]=2[CH2:21][N:22]([CH2:23][CH3:24])[C:35]([NH:45][CH2:44][C:43]2[CH:46]=[CH:47][C:40]([Cl:39])=[CH:41][CH:42]=2)=[O:36])[C:9]([O:12][CH3:13])=[CH:10][CH:11]=1)[CH3:2]

Participants

Conditions

Temperature: 0 °C

Procedure

(2′-Ethylaminomethyl-4′-fluoro-6-methoxy-biphenyl-3-yl)-acetic acid ethyl ester (0.172 g, 0.5 mmol) and diisopropylethylamine (0.43 mL, 2.5 mmol) were combined in CH2Cl2 (2.5 mL) and cooled to 0° C. Phosgene (20% in toluene; 0.40 mL, 0.75 mmol) was added, and the mixture was stirred for 1 hour. 4-Chlorobenzylamine (0.012 mL, 1.0 mmol) was added, and the reaction was stirred for 1 hour. The mixture was diluted with CH2Cl2 and washed with H2O. The organic layer was dried, filtered, and concentrated, and the residue was purified by preparative HPLC to give {2′-[3-(4-chloro-benzyl)-1-ethyl-ureidomethyl]-4′-fluoro-6-methoxy-biphenyl-3-yl}-acetic acid ethyl ester. The ethyl ester was hydrolyzed with LiOH in THF at room temperature to provide the title compound.

Workup

stirringthe reaction was stirred for 1 hour
washwashed with H2O
customThe organic layer was dried
filtrationfiltered
concentrationconcentrated
customthe residue was purified by preparative HPLC

Sources & evidence

ORD record: ord-caebc1efacb543f595ce438b1cb643be
Source dataset: uspto-grants-2012_12
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08338484B2

Reaction notes

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