Tetrahydrofuran → Ethyl 4-[(5,6,7,8-tetrahydro-8,8-dimethyl-5-oxonaphth-2-yl)ethynyl]benzoate

HRID 24067

Reaktionsgleichung

Reaktionsgleichung von HRID 24067
[C:1]([C:3]1[CH:4]=[C:5]2[C:10](=[CH:11][CH:12]=1)[C:9](=[O:13])[CH2:8][CH2:7][C:6]2([CH3:15])[CH3:14])#[CH:2].[O:16]1[CH2:20][CH2:19][CH2:18][CH2:17]1>C(N(CC)CC)C.C(OCC)C.[Cu]I.Cl[Pd](Cl)([P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1)[P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1>[CH2:9]([O:13][C:20](=[O:16])[C:19]1[CH:3]=[CH:1][C:2]([C:2]#[C:1][C:3]2[CH:12]=[CH:11][C:10]3[C:9](=[O:13])[CH2:8][CH2:7][C:6]([CH3:15])([CH3:14])[C:5]=3[CH:4]=2)=[CH:17][CH:18]=1)[CH3:8]

Komponenten

7

Edukt 2

HCID 8028TetrahydrofuranHCID 225688236-ethynyl-3,4-dihydro-4,4-dimethylnaphthalen-1(2H)-one2×

Produkt 1

HCID 15345545Ethyl 4-[(5,6,7,8-tetrahydro-8,8-dimethyl-5-oxonaphth-2-yl)ethynyl]benzoateAusbeute 72 %

Reagenzien, Katalysatoren, Lösungsmittel 4

HCID 24350Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)KatalysatorHCID 178418476HCID 178418476, VerbindungKatalysatorHCID 3283Diethyl EtherLösungsmittelHCID 8471TriethylamineLösungsmittel

Versuchsvorschrift

A solution of 6-ethynyl-4,4-dimethyl-1,2,3,4-tetrahydronaphthalene-1-one (Intermediate 13, 0.23 g, 1.1 mmol) and ethyl-4-iodo benzoate (Reagent A, 0.36 g, 1.3 mmol) in triethyl amine (7 mL) and anhydrous tetrahydrofuran (3 mL) was treated with copper(I)iodide (0.114 g, 0.6 mmol) and sparged with argon for 5 minutes. Dichlorobis(triphenylphosphine)palladium(II) (0.23 g, 0.33 mmol) was added and the reaction mixture was stirred overnight at room temperature. It was diluted with diethyl ether and filtered over a bed of celite. The filtrate was evaporated in vacuo to a brown oil that was subjected to flash column chromatography over silica gel (230-400 mesh) using 6-7% ethyl acetate in hexane as the eluent to afford the title compound (0.29 g, 72%) as a pale brown solid.

Aufarbeitung

  1. customsparged with argon for 5 minutes
  2. filtrationfiltered over a bed of celite
  3. customThe filtrate was evaporated in vacuo to a brown oil that

Quellen und Nachweise

ORD-Eintrag
ord-af3738221a084748915d7adec9bb3970
Quelldatensatz
uspto-grants-2005_02
Patentnummer
US06855512B2

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