Triphenylphosphine → methyl 2-((S)-6-((4-fluoro-2',6'-dimethyl-4'-(((S)-tetrahydrofuran-3-yl)oxy)biphenyl-3-yl)methoxy)-2,3-dihydrobenzofuran-3-yl)acetate

HRID 2280673Notes

Reaction equation

HRID 2280673 reaction equation
[F:1][C:2]1[CH:7]=[CH:6][C:5]([C:8]2[C:13]([CH3:14])=[CH:12][C:11]([O:15][C@H:16]3[CH2:20][CH2:19][O:18][CH2:17]3)=[CH:10][C:9]=2[CH3:21])=[CH:4][C:3]=1[CH2:22][OH:23].O[C:25]1[CH:38]=[CH:37][C:28]2[C@H:29]([CH2:32][C:33]([O:35][CH3:36])=[O:34])[CH2:30][O:31][C:27]=2[CH:26]=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>ClCCl>[F:1][C:2]1[CH:7]=[CH:6][C:5]([C:8]2[C:13]([CH3:14])=[CH:12][C:11]([O:15][C@H:16]3[CH2:20][CH2:19][O:18][CH2:17]3)=[CH:10][C:9]=2[CH3:21])=[CH:4][C:3]=1[CH2:22][O:23][C:25]1[CH:38]=[CH:37][C:28]2[C@H:29]([CH2:32][C:33]([O:35][CH3:36])=[O:34])[CH2:30][O:31][C:27]=2[CH:26]=1

Participants

6

Reactant 4

HCID 11776TriphenylphosphineHCID 75555Diisopropyl diazene-1,2-dicarboxylateHCID 53393313(S)-Methyl 2-(6-hydroxy-2,3-dihydrobenzofuran-3-yl)acetateHCID 89701765(S)-(4-fluoro-2',6'-dimethyl-4'-((tetrahydrofuran-3-yl)oxy)biphenyl-3-yl)methanol

Product 1

HCID 89701770methyl 2-((S)-6-((4-fluoro-2',6'-dimethyl-4'-(((S)-tetrahydrofuran-3-yl)oxy)biphenyl-3-yl)methoxy)-2,3-dihydrobenzofuran-3-yl)acetateYield 65.8%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Conditions

Temperature
0 °C

Procedure

The crude (S)-(4-fluoro-2′,6′-dimethyl-4′-((tetrahydrofuran-3-yl)oxy)biphenyl-3-yl)methanol 18d (150 mg, 0.45 mmol), methyl (S)-2-(6-hydroxyl-2,3-dihydrobenzofuran-3-yl)acetate (94 mg, 0.45 mmol) and triphenylphosphine (177 mg, 0.68 mmol) were dissolved in 5 mL of dichloromethane. The reaction solution was cooled down to 0° C., followed by addition of diisopropyl azodicarboxylate (136 mg, 0.68 mmol). The reaction solution was warmed up to room temperature and stirred for 12 hours. The resulting solution was concentrated under reduced pressure and the residue was purified by silica gel column chromatography with elution system B to obtain the title compound methyl 2-((S)-6-((4-fluoro-2′,6′-dimethyl-4′-(((S)-tetrahydrofuran-3-yl)oxy)biphenyl-3-yl)methoxy)-2,3-dihydrobenzofuran-3-yl)acetate 18e (150 mg, yield 65.8%) as a colorless slime.

Workup

  1. temperatureThe reaction solution was warmed up to room temperature
  2. concentrationThe resulting solution was concentrated under reduced pressure
  3. customthe residue was purified by silica gel column chromatography with elution system B

Sources & evidence

ORD record
ord-714ff8ae9e37417e9eea6e30224942d3
Source dataset
uspto-grants-2015_09
Patent number
US09139548B2

Reaction notes

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