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2-Dimethylaminopyridine → (Trimethylsilyl)ethyl 4-[(5,6,7,8-tetrahydro-8,8-dimethyl-5-oxonaphth-2-yl)ethynyl]benzoate

HRID 1238
Notes
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Reaction equation

HRID 1238 reaction equation
[CH3:1][C:2]1([CH3:24])[C:11]2[CH:10]=[C:9]([C:12]#[C:13][C:14]3[CH:22]=[CH:21][C:17]([C:18]([OH:20])=[O:19])=[CH:16][CH:15]=3)[CH:8]=[CH:7][C:6]=2[C:5](=[O:23])[CH2:4][CH2:3]1.CN(C1C=CC=CN=1)C.[CH3:34][Si:35]([CH:38](O)[CH3:39])([CH3:37])[CH3:36].Cl.CN(C)CCCN=C=NCC>C(Cl)Cl>[CH3:1][C:2]1([CH3:24])[C:11]2[CH:10]=[C:9]([C:12]#[C:13][C:14]3[CH:15]=[CH:16][C:17]([C:18]([O:20][CH2:39][CH2:38][Si:35]([CH3:37])([CH3:36])[CH3:34])=[O:19])=[CH:21][CH:22]=3)[CH:8]=[CH:7][C:6]=2[C:5](=[O:23])[CH2:4][CH2:3]1
ParticipantsConditionsProcedureWorkupSources & evidenceReaction notes

Participants

6

Reactant 4

HCID 218852-DimethylaminopyridineHCID 27239391,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochlorideHCID 124478981-(Trimethylsilyl)ethanolHCID 153455474-((5,6,7,8-Tetrahydro-8,8-dimethyl-5-oxonaphth-2-yl)ethynyl]benzoic acid2×

Product 1

HCID 54412444(Trimethylsilyl)ethyl 4-[(5,6,7,8-tetrahydro-8,8-dimethyl-5-oxonaphth-2-yl)ethynyl]benzoate

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Conditions

Temperature
25 °C

Procedure

To a solution of 0.24 g (0.73 mmol) of 4-[(5,6,7,8-tetrahydro-8,8-dimethyl-5-oxonaphth-2-yl)ethynyl]benzoic acid (Compound 7) in 10 ml of dry CH2Cl2 was added 0.09 g (0.74 mmol) of dimethylaminopyridine, 0.115 ml (0.80 mmol) of trimethylsilylethanol and 0.17 g (0.88 mmol) of 1-(3-dimethylaminopropyl)-3-ethyl carbodiimide hydrochloride. The reaction mixture was stirred at 25° C. for 5 hours, washed with sat. aqueous NaHCO3 and brine, dried over Na2SO4 and concentrated in vacuo to an oil. Purification by flash chromatography (silica, 10% EtOAc-hexane) yielded the title compound as a white solid.

Workup

  1. washwashed with sat. aqueous NaHCO3 and brine
  2. dry with materialdried over Na2SO4
  3. concentrationconcentrated in vacuo to an oil
  4. customPurification by flash chromatography (silica, 10% EtOAc-hexane)

Sources & evidence

ORD record
ord-558960f60108438697a2928369019551
Source dataset
uspto-grants-1998_03
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US05723620

Reaction notes

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On this pageParticipantsConditionsProcedureWorkupSources & evidenceReaction notes