Dehydrolinalool → 2H-Pyran, 2-ethynyltetrahydro-2,6,6-trimethyl-

HRID 1282309

Reaktionsgleichung

Reaktionsgleichung von HRID 1282309
[CH3:1][C:2]([CH3:11])=[CH:3][CH2:4][CH2:5][C:6]([OH:10])([C:8]#[CH:9])[CH3:7]>C(OC)(C)(C)C>[C:8]([C:6]1([CH3:7])[CH2:5][CH2:4][CH2:3][C:2]([CH3:11])([CH3:1])[O:10]1)#[CH:9]

Komponenten

3

Edukt 1

HCID 62842Dehydrolinalool

Produkt 1

HCID 1145702H-Pyran, 2-ethynyltetrahydro-2,6,6-trimethyl-

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 15413tert-Butyl methyl etherLösungsmittel

Versuchsvorschrift

A solution of 13.82 g (0.09 mol) of dehydrolinalool (II, R1, R2 and R3 =methyl) in 200 ml of methyl tert.butyl ether was added to 28.35 g of Zeocat® Z6-05-02 and stirred for 30 min. The reaction mixture was evaporated (40° C., 300 mbar) and the resulting solid was subjected to microwave irradiation (600 W power for 4 s). The product was separated from the solid by dissolving in 300 ml acetone and evaporating the solvent in vacuo. The crude 2-ethinyl-tetrahydro-2,6,6-trimethylpyran was obtained in 13.30 g (96.2%) yield as yellowish liquid.

Aufarbeitung

  1. customThe reaction mixture was evaporated (40° C., 300 mbar)
  2. customthe resulting solid was subjected to microwave irradiation (600 W power for 4 s)
  3. customThe product was separated from the solid
  4. dissolutionby dissolving in 300 ml acetone
  5. customevaporating the solvent in vacuo

Quellen und Nachweise

ORD-Eintrag
ord-20004b551fa44c108ce00d9eeefe254d
Quelldatensatz
uspto-grants-2002_09
Patentnummer
US06455707B1

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