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Tri-o-tolylphosphine → Ethyl (E)-4-[2-(5,6-dihydro-5,5-dimethyl-8-(phenylthio)naphthalenyl)ethenyl]benzoate

HRID 1370
Notes
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Reaction equation

HRID 1370 reaction equation
Br[C:2]1[CH:11]=[CH:10][C:9]2[C:8]([CH3:13])([CH3:12])[CH2:7][CH:6]=[C:5]([S:14][C:15]3[CH:20]=[CH:19][CH:18]=[CH:17][CH:16]=3)[C:4]=2[CH:3]=1.[CH:21]([C:23]1[CH:33]=[CH:32][C:26]([C:27]([O:29][CH2:30][CH3:31])=[O:28])=[CH:25][CH:24]=1)=[CH2:22].C1(C)C=CC=CC=1P(C1C=CC=CC=1C)C1C=CC=CC=1C>C(N(CC)CC)C.C([O-])(=O)C.[Pd+2].C([O-])(=O)C>[CH3:12][C:8]1([CH3:13])[CH2:7][CH:6]=[C:5]([S:14][C:15]2[CH:20]=[CH:19][CH:18]=[CH:17][CH:16]=2)[C:4]2[C:3](/[CH:22]=[CH:21]/[C:23]3[CH:33]=[CH:32][C:26]([C:27]([O:29][CH2:30][CH3:31])=[O:28])=[CH:25][CH:24]=3)=[CH:2][CH:11]=[CH:10][C:9]1=2
ParticipantsConditionsProcedureWorkupSources & evidenceReaction notes

Participants

6

Reactant 3

HCID 80271Tri-o-tolylphosphineHCID 10866858Ethyl 4-vinylbenzoateHCID 158960184,4-Dimethyl-7-bromo-1-phenylthio-3,4-dihydronaphthalene

Product 1

HCID 19695074Ethyl (E)-4-[2-(5,6-dihydro-5,5-dimethyl-8-(phenylthio)naphthalenyl)ethenyl]benzoate

Reagents, catalysts & solvents 2

HCID 167845palladium(II) acetate
Catalyst
HCID 8471TriethylamineSolvent

Conditions

Temperature
90 °C

Procedure

To a degassed solution of 0.35 g (1.0 mmol) of 2-bromo-5,6-dihydro-5,5-dimethyl-8-(phenylthio)-naphthalene (Compound A35) and 0.34 g (1.9 mmol) of ethyl 4-vinylbenzoate in 4.0 mL of triethylamine, was added 0.066 g (0.2 mmol) of tri-o-tolylphosphine and then 0.025 g (0.1 mmol) of palladium(II) acetate. The reaction was heated at 90° C. for 2.25 h. The reaction was concentrated in vacuo. The residue was purified by flash chromatography (silica, 5% ethyl acetate in hexane), followed by recrystallization using EtOH to afford the title compound as white crystals.

Workup

  1. concentrationThe reaction was concentrated in vacuo
  2. customThe residue was purified by flash chromatography (silica, 5% ethyl acetate in hexane)
  3. customfollowed by recrystallization

Sources & evidence

ORD record
ord-6359f090cbac49c6a126e41999e4f8b9
Source dataset
uspto-grants-1998_03
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US05723666

Reaction notes

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On this pageParticipantsConditionsProcedureWorkupSources & evidenceReaction notes