Triphenylphosphine → methyl (E)-[4-[3-(4-bromophenyl)-3-[4-trifluoromethylphenyl]allyloxy]-2-methylphenoxy]acetate

HRID 549918Notes

Reaction equation

[Br:1][C:2]1[CH:7]=[CH:6][C:5](/[C:8](/[C:12]2[CH:17]=[CH:16][C:15]([C:18]([F:21])([F:20])[F:19])=[CH:14][CH:13]=2)=[CH:9]/[CH2:10][OH:11])=[CH:4][CH:3]=1.O[C:23]1[CH:34]=[CH:33][C:26]([O:27][CH2:28][C:29]([O:31][CH3:32])=[O:30])=[C:25]([CH3:35])[CH:24]=1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.N(C(OC(C)C)=O)=NC(OC(C)C)=O>C1(C)C=CC=CC=1.O1CCCC1>[Br:1][C:2]1[CH:7]=[CH:6][C:5](/[C:8](/[C:12]2[CH:17]=[CH:16][C:15]([C:18]([F:19])([F:20])[F:21])=[CH:14][CH:13]=2)=[CH:9]/[CH2:10][O:11][C:23]2[CH:34]=[CH:33][C:26]([O:27][CH2:28][C:29]([O:31][CH3:32])=[O:30])=[C:25]([CH3:35])[CH:24]=2)=[CH:4][CH:3]=1

Participants

Conditions

Temperature: 0 °C

Procedure

The above allyl alcohol (0.77 g, 2.16 mmol), methyl (4-hydroxy-2-methylphenoxy)acetate (0.47 g, 2.37 mmol) and triphenylphosphine (0.68 g, 2.59 mmol) were dissolved in a mixture of anhydrous toluene (10 mL) and tetrahydrofuran (3 mL). The mixture was degassed, cooled to 0° C. and a degassed solution of diisopropyl azodicarboxylate (0.525 g, 2.60 mmol) in anhydrous tetrahydrofuran (3 mL) was added dropwise under nitrogen. The reaction mixture was stirred at ambient temperature over night. The solvents were evaporated in vacuo and the residue was submitted to column chromatography (silica gel Fluka 60, hexanes/ethyl acetate 95: 5-90:10) affording methyl (E)-[4-[3-(4-bromophenyl)-3-[4-trifluoromethyl phenyl]allyloxy]-2-methylphenoxy]acetate.

Workup

customThe mixture was degassed
customThe solvents were evaporated in vacuo

Sources & evidence

ORD record: ord-d1b8348abfbe4a0585d6c045bd89776e
Source dataset: uspto-grants-2011_05
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07943613B2

Reaction notes

Loading…