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

HRID 1039483Notes

Reaction equation

[I:1][C:2]1[CH:7]=[CH:6][C:5](/[C:8](/[C:12]2[CH:17]=[CH:16][CH:15]=[C:14]([C:18]([F:21])([F:20])[F:19])[CH:13]=2)=[CH:9]\[CH2:10][OH:11])=[CH:4][CH:3]=1.[CH3:22][C:23]1[CH:33]=[C:32](OC/C=C(/C2C=CC(C#CCN3CCOCC3)=CC=2)\C2C=CC=CC=2)[CH:31]=[CH:30][C:24]=1[O:25][CH2:26][C:27]([OH:29])=[O:28].[C:59]1(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>[I:1][C:2]1[CH:7]=[CH:6][C:5](/[C:8](/[C:12]2[CH:17]=[CH:16][CH:15]=[C:14]([C:18]([F:19])([F:20])[F:21])[CH:13]=2)=[CH:9]\[CH2:10][O:11][C:32]2[CH:31]=[CH:30][C:24]([O:25][CH2:26][C:27]([O:29][CH3:59])=[O:28])=[C:23]([CH3:22])[CH:33]=2)=[CH:4][CH:3]=1

Participants

Conditions

Temperature: 0 °C

Procedure

The above allyl alcohol (2.0 g, 4.94 mmol), methyl (4-hydroxy-2-methylphenoxy)acetate (1.08 g, 5.54 mmol; example 2) and triphenylphosphine (1.50 g, 6.02 mmol) were dissolved in a mixture of anhydrous toluene (40 mL) and tetrahydrofuran (20 mL). The mixture was cooled to 0° C., kept under argon and a degassed solution of diisopropyl azodicarboxylate (1.15 mL, 5.82 mmol) in anhydrous tetrahydrofuran (10 mL) was added dropwise during 10 min. The reaction mixture was allowed to warm up to ambient temperature with the bath and then was stirred for 20 h. The solvents were evaporated in vacuo and the residue was submitted to flash column chromatography (silica gel Fluka 60, hexanes/ethyl acetate 9:1) affording methyl (E)-[4-[3-(4-iodophenyl)-3-(3-trifluoromethylphenyl)allyloxy]-2-methylphenoxy]acetate as yellow oil.

Workup

temperatureto warm up to ambient temperature with the bath
customThe solvents were evaporated in vacuo

Sources & evidence

ORD record: ord-541b744b6a844ccbb40648d3606777d1
Source dataset: uspto-grants-2013_10
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08551993B2

Reaction notes

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