Triphenylphosphine → Ethyl (2R)-2-{4-[5-methyl-1-(4-octyloxyphenyl)-1H-pyrrol-2-yl]phenoxy}-3-phenylpropanoate

HRID 1072754Notes

Reaction equation

HRID 1072754 reaction equation
[CH3:1][C:2]1[N:6]([C:7]2[CH:12]=[CH:11][C:10]([O:13][CH2:14][CH2:15][CH2:16][CH2:17][CH2:18][CH2:19][CH2:20][CH3:21])=[CH:9][CH:8]=2)[C:5]([C:22]2[CH:27]=[CH:26][C:25]([OH:28])=[CH:24][CH:23]=2)=[CH:4][CH:3]=1.O[C@@H:30]([CH2:36][C:37]1[CH:42]=[CH:41][CH:40]=[CH:39][CH:38]=1)[C:31]([O:33][CH2:34][CH3:35])=[O:32].C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.N(C(N1CCCCC1)=O)=NC(N1CCCCC1)=O>C1(C)C=CC=CC=1.O>[CH3:1][C:2]1[N:6]([C:7]2[CH:8]=[CH:9][C:10]([O:13][CH2:14][CH2:15][CH2:16][CH2:17][CH2:18][CH2:19][CH2:20][CH3:21])=[CH:11][CH:12]=2)[C:5]([C:22]2[CH:23]=[CH:24][C:25]([O:28][C@H:30]([CH2:36][C:37]3[CH:38]=[CH:39][CH:40]=[CH:41][CH:42]=3)[C:31]([O:33][CH2:34][CH3:35])=[O:32])=[CH:26][CH:27]=2)=[CH:4][CH:3]=1

Participants

7

Reactant 4

HCID 11776TriphenylphosphineHCID 730421,1'-(Azodicarbonyl)dipiperidineHCID 9877619Ethyl phenyllactate, (-)-HCID 223876094-[5-methyl-1-(4-octyloxyphenyl)-1H-pyrrol-2-yl]phenol

Product 1

HCID 86588900Ethyl (2R)-2-{4-[5-methyl-1-(4-octyloxyphenyl)-1H-pyrrol-2-yl]phenoxy}-3-phenylpropanoateYield 39.6%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 1140TolueneSolvent

Conditions

Temperature
80 °C

Procedure

To a solution of 4-[5-methyl-1-(4-octyloxyphenyl)-1H-pyrrol-2-yl]phenol (740 mg, 1.96 mmol), ethyl (S)-2-hydroxy-3-phenylpropanoate (570 mg, 2.94 mmol) and triphenylphosphine (770 mg, 2.94 mmol) in toluene (2 ml) was added 1,1′-(azodicarbonyl)dipiperidine (741 mg, 2.94 mmol) and the mixture was stirred at 80° C. for 12 hours. The reaction solution was poured into water and the mixture was extracted with ethyl acetate. The extract was dried over magnesium sulfate anhydride and the solvent was removed under reduced pressure. The residue was purified by silica gel column chromatography (hexane:ethyl acetate=30:1) to give the object compound as an oily substance. 420 mg (yield: 39.6%)

Workup

  1. extractionthe mixture was extracted with ethyl acetate
  2. dry with materialThe extract was dried over magnesium sulfate anhydride
  3. customthe solvent was removed under reduced pressure
  4. customThe residue was purified by silica gel column chromatography (hexane:ethyl acetate=30:1)
  5. customto give the object compound as an oily substance

Sources & evidence

ORD record
ord-73a7679c640c4619a273cd2828e981e1
Source dataset
uspto-grants-2005_06
Patent number
US06911468B2

Reaction notes

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