Methyl Acrylate → HCID 15453700, compound

HRID 2281121Notes

Reaction equation

Br[C:2]1[CH:8]=[C:7]([C:9]([F:12])([F:11])[F:10])[CH:6]=[CH:5][C:3]=1[NH2:4].[C:13]([O:17][CH3:18])(=[O:16])[CH:14]=[CH2:15].CC1C=CC=CC=1P(C1C=CC=CC=1C)C1C=CC=CC=1C.C(N(CC)CC)C>CC([O-])=O.CC([O-])=O.[Pd+2].C(#N)C>[NH2:4][C:3]1[CH:5]=[CH:6][C:7]([C:9]([F:12])([F:11])[F:10])=[CH:8][C:2]=1/[CH:15]=[CH:14]/[C:13]([O:17][CH3:18])=[O:16]

Participants

Conditions

Temperature: 90 °C

Procedure

A 100 ml 3-neck flask with magnetic stirrer was charged with 2-bromo-4-(trifluoromethyl)aniline (500 mg, 2.08 mmol), methyl acrylate (538 mg, 6.25 mmol), Pd(OAc)2 (23.3 mg, 0.104 mmol), P(o-tolyl)3 (64 mg, 0.21 mmol), triethylamine (422 mg, 4.7 mmol) and acetonitrile (20 ml). The flask was purged with N2 and heated to 90° C. overnight. Saturated aqueous NH4Cl (40 ml) was added, and the mixture was extracted with ethyl acetate (10 ml*3). The organic layer was dried over Na2SO4, filtered, and concentrated to dryness. The crude product was purified by silica gel chromatography to give (E)-methyl 3-(2-amino-5-(trifluoromethyl)phenyl)acrylate (185.9 mg, 36.5%) as a yellow solid. 1H NMR (400 MHz, CDCl3) δ 7.69 (d, J=16 Hz, 1H), 7.53 (s, 1H), 7.32 (d, J=8.8 Hz, 1H), 6.67 (d, J=8.8 Hz, 1H), 6.34 (d, J=16 Hz, 1H), 4.20 (s, 2H), 3.74 (s, 3H).

Workup

customThe flask was purged with N2
additionSaturated aqueous NH4Cl (40 ml) was added
extractionthe mixture was extracted with ethyl acetate (10 ml*3)
dry with materialThe organic layer was dried over Na2SO4
filtrationfiltered
concentrationconcentrated to dryness
customThe crude product was purified by silica gel chromatography

Sources & evidence

ORD record: ord-7f6c3e1d09674e03b20ce88e1e61bb54
Source dataset: uspto-grants-2015_09
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US09139538B2

Reaction notes

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