tert-Butyl 4'-(bromomethyl)biphenyl-2-carboxylate → N-[[2'-(t-butoxycarbonyl)biphenyl-4-yl]methyl]phthalimide

HRID 1693622Notes

Reaction equation

[C:1]([O:5][C:6]([C:8]1[C:9]([C:14]2[CH:19]=[CH:18][C:17]([CH2:20]Br)=[CH:16][CH:15]=2)=[CH:10][CH:11]=[CH:12][CH:13]=1)=[O:7])([CH3:4])([CH3:3])[CH3:2].[C:22]1(=[O:32])[NH:26][C:25](=[O:27])[C:24]2=[CH:28][CH:29]=[CH:30][CH:31]=[C:23]12.[K]>CN(C=O)C>[C:1]([O:5][C:6]([C:8]1[C:9]([C:14]2[CH:19]=[CH:18][C:17]([CH2:20][N:26]3[C:22](=[O:32])[C:23]4[C:24](=[CH:28][CH:29]=[CH:30][CH:31]=4)[C:25]3=[O:27])=[CH:16][CH:15]=2)=[CH:10][CH:11]=[CH:12][CH:13]=1)=[O:7])([CH3:4])([CH3:3])[CH3:2]

Participants

Conditions

Temperature: 50 °C

Procedure

4′-Bromomethylbiphenyl-2-carboxylic acid t-butyl ester (4.0 g, 11.5 mmol) and potassium phthalimide were combined and dissolved in DMF (30 mL), and the mixture was heated at 50° C. for two days. The mixture was then cooled to room temperature and the reaction quenched with water (30 mL). The mixture was then extracted with EtOAc, and washed with a 10% aqueous lithium chloride solution. The organic layer was dried over MgSO4, filtered and concentrated to obtain intermediate (22a) (4.8 g). MS m/z: [M+H+] calcd for C26H23NO4, 414.5. found 414.3.

Workup

temperatureThe mixture was then cooled to room temperature
customthe reaction quenched with water (30 mL)
extractionThe mixture was then extracted with EtOAc
washwashed with a 10% aqueous lithium chloride solution
dry with materialThe organic layer was dried over MgSO4
filtrationfiltered
concentrationconcentrated

Sources & evidence

ORD record: ord-c6ee1d1a40ba4db3a0252baa3dedae16
Source dataset: uspto-grants-2012_04
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08158659B2

Reaction notes

Loading…