Dimethyl malonate → Dimethyl 2'-methoxy-3-nitrobiphenyl-4-malonate

HRID 366579Notes

Reaction equation

[C:1]([O:8][CH3:9])(=[O:7])[CH2:2][C:3]([O:5][CH3:6])=[O:4].[H-].[Na+].F[C:13]1[CH:18]=[CH:17][C:16]([C:19]2[CH:24]=[CH:23][CH:22]=[CH:21][C:20]=2[O:25][CH3:26])=[CH:15][C:14]=1[N+:27]([O-:29])=[O:28]>CS(C)=O>[CH3:26][O:25][C:20]1[CH:21]=[CH:22][CH:23]=[CH:24][C:19]=1[C:16]1[CH:17]=[CH:18][C:13]([CH:2]([C:1]([O:8][CH3:9])=[O:7])[C:3]([O:5][CH3:6])=[O:4])=[C:14]([N+:27]([O-:29])=[O:28])[CH:15]=1

Participants

Conditions

Temperature: 100 °C

Procedure

Dimethyl malonate (14 mL) was added dropwise to 2.9 g of sodium hydride suspended in 50 mL of dimethylsulfoxide. The mixture was heated at 100° C. for 15 minutes and cooled to room temperature. Crude 4-fluoro-2'-methoxy-3-nitrobiphenyl in 60 mL of dimethylsulfoxide was added and the mixture was heated at 100° C. for 2 hours. The reaction mixture was cooled and quenched with 300 mL of saturated sodium chloride solution and extracted twice with ethyl acetate. The extracts were combined, washed with saturated ammonium chloride, water and brine, dried over anhydrous sodium sulfate and concentrated to give crude dimethyl 2'-methoxy-3-nitrobiphenyl-4-malonate as a yellow oil.

Workup

temperaturecooled to room temperature
temperaturethe mixture was heated at 100° C. for 2 hours
temperatureThe reaction mixture was cooled
customquenched with 300 mL of saturated sodium chloride solution
extractionextracted twice with ethyl acetate
washwashed with saturated ammonium chloride, water and brine
dry with materialdried over anhydrous sodium sulfate
concentrationconcentrated

Sources & evidence

ORD record: ord-b1b16a938801417892c80c3c71461829
Source dataset: uspto-grants-2000_10
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US06130238

Reaction notes

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