Tributylphosphine → HCID 57791929, compound

HRID 1969185Notes

Reaction equation

HRID 1969185 reaction equation
[Br:1][C:2]1[CH:3]=[C:4]([CH2:16]O)[CH:5]=[C:6]([O:8][Si:9]([C:12]([CH3:15])([CH3:14])[CH3:13])([CH3:11])[CH3:10])[CH:7]=1.[CH2:18]([O:20][C:21](=[O:32])[CH2:22][O:23][C:24]1[CH:29]=[CH:28][C:27]([SH:30])=[CH:26][C:25]=1[CH3:31])[CH3:19].C(P(CCCC)CCCC)CCC.N(C(N1CCCCC1)=O)=NC(N1CCCCC1)=O>C1COCC1.C(OCC)(=O)C.O>[CH2:18]([O:20][C:21](=[O:32])[CH2:22][O:23][C:24]1[CH:29]=[CH:28][C:27]([S:30][CH2:16][C:4]2[CH:5]=[C:6]([O:8][Si:9]([C:12]([CH3:13])([CH3:14])[CH3:15])([CH3:10])[CH3:11])[CH:7]=[C:2]([Br:1])[CH:3]=2)=[CH:26][C:25]=1[CH3:31])[CH3:19]

Participants

8

Reactant 4

HCID 13831TributylphosphineHCID 730421,1'-(Azodicarbonyl)dipiperidineHCID 16641178Ethyl (4-mercapto-2-methylphenoxy)acetateHCID 57791917(3-Bromo-5-{[tert-butyl(dimethyl)silyl]oxy}phenyl)methanol

Product 1

HCID 57791929HCID 57791929, compound

Reagents, catalysts & solvents 3

HCID 962WaterSolventHCID 8028TetrahydrofuranSolventHCID 8857Ethyl AcetateSolvent

Procedure

[3-Bromo-5-(tert-butyl-dimethyl-silanyloxy)-phenyl]-methanol (6.4 g; 20.17 mmol) and (4-mercapto-2-methyl-phenoxy)-acetic acid ethyl ester (5.02 g; 22.19 mmol) were dissolved in THF (200 mL). Tributylphosphine (8.15 g; 40.34 mmol) and 1,1′-(azodicarbonyl)dipiperidine (10.17 g; 40.34 mmol) were added, and the reaction mixture was stirred for 14 h at room temperature. Water and ethyl acetate were added to the reaction mixture. The phases were separated. The organic phase was washed with water, dried, and evaporated. The crude product was purified by flash chromatography (heptane:dichloromethane (1:1)). Yield: 8 g; 80%. HPLC-MS: m/z: 527.0 (M+1); Rt: 3.10 min.

Workup

  1. customThe phases were separated
  2. washThe organic phase was washed with water
  3. customdried
  4. customevaporated
  5. customThe crude product was purified by flash chromatography (heptane:dichloromethane (1:1))

Sources & evidence

ORD record
ord-6a953d631bf44f9e940c31b8094a339e
Source dataset
uspto-grants-2013_04
Patent number
US08426473B2

Reaction notes

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