Tributylphosphine → 3-{2-Methyl-4-[5-(4-trifluoromethyl-phenyl)-thiophen-2-ylmethoxy]-phenyl}-propionic acid methyl ester

HRID 490776

Reaction equation

HRID 490776 reaction equation
[F:1][C:2]([F:17])([F:16])[C:3]1[CH:8]=[CH:7][C:6]([C:9]2[S:13][C:12]([CH2:14][OH:15])=[CH:11][CH:10]=2)=[CH:5][CH:4]=1.[CH3:18][O:19][C:20](=[O:31])[CH2:21][CH2:22][C:23]1[CH:28]=[CH:27][C:26](O)=[CH:25][C:24]=1[CH3:30].C(P(CCCC)CCCC)CCC.N(C(N1CCCCC1)=O)=NC(N1CCCCC1)=O>C1(C)C=CC=CC=1.CCCCCC>[CH3:18][O:19][C:20](=[O:31])[CH2:21][CH2:22][C:23]1[CH:28]=[CH:27][C:26]([O:15][CH2:14][C:12]2[S:13][C:9]([C:6]3[CH:5]=[CH:4][C:3]([C:2]([F:16])([F:1])[F:17])=[CH:8][CH:7]=3)=[CH:10][CH:11]=2)=[CH:25][C:24]=1[CH3:30]

Participants

7

Reactant 4

HCID 13831TributylphosphineHCID 730421,1'-(Azodicarbonyl)dipiperidineHCID 13551833Methyl 3-(4-Hydroxy-2-methylphenyl)propanoateHCID 219863522-Thiophenemethanol, 5-[4-(trifluoromethyl)phenyl]-

Product 1

HCID 688530103-{2-Methyl-4-[5-(4-trifluoromethyl-phenyl)-thiophen-2-ylmethoxy]-phenyl}-propionic acid methyl ester

Reagents, catalysts & solvents 2

HCID 1140TolueneSolvent2×HCID 8058HexaneSolvent

Procedure

To a solution of [5-(4-Trifluoromethyl-phenyl)-thiophen-2-yl]-methanol (0.063 g, 0.232 mmole) and 3-(4-Hydroxy-2-methyl-phenyl)-propionic acid methyl ester (0.045 g, 0.232 mmole) in toluene (2 mL) at room temperature, is added tributylphosphine (0.087 mL, 0.348 mmole) followed by a solution of 1,1′-(azodicarbonyl)-dipiperidine (0.088 g, 0.348 mmole) in toluene (2 mL). The reaction is stirred overnight, and then diluted with hexane (10 mL). The precipitate is removed through filtration and the filtrate is concentrated, loaded to a silica gel column, eluted with ethyl acetate in hexane (0-15%) and concentrated to provide the titled compound as white solid.

Workup

  1. customThe precipitate is removed through filtration
  2. concentrationthe filtrate is concentrated
  3. washeluted with ethyl acetate in hexane (0-15%)
  4. concentrationconcentrated

Sources & evidence

ORD record
ord-214e20cfb29941c9930ae7b36710846b
Source dataset
uspto-grants-2009_05
Patent number
US07528160B2

Linked notes

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