Reacción #1880955

Ecuación de reacción

water

(2E,7Z)-1,1-dimethoxy-2,4,7-decatriene

→

(2E,7Z)-2,4,7-decatrienal

Rendimiento 96.0%

Disolventes

acetone

Et2O

Condiciones de reacción

Tratamiento posterior

1. 1
   workup.ADDITIONwere added 0.2 g of AMBERLITE®
2. 2
   Otrothe reaction mixture so obtained
3. 3
   FiltraciónAfterwards, the reaction mixture was filtered
4. 4
   Concentraciónconcentrated
5. 5
   OtroThe crude product thus obtained
6. 6
   Lavadothe organic phase has been washed twice with brine
7. 7
   Secadodried over Na2SO4
8. 8
   Concentraciónconcentrated
9. 9
   Otroto yield 8.8 g of an extract
10. 10
    workup.DISTILLATIONThe extract has been further purified by distillation over a Vigreux column (52–54° C./0.1 mbar)

Procedimiento

To a solution of 9.8 g of a mixture of (2E,7Z)-1,1-dimethoxy-2,4,7-decatriene as obtained in example 1 (50 mmoles) and 2.7 ml of water (150 mmoles) in 150 ml of acetone were added 0.2 g of AMBERLITE®, and the reaction mixture so obtained was stirred for 1 hour at room temperature. Afterwards, the reaction mixture was filtered and neutralized with 1 ml of a saturated aqueous solution of NaHCO3, and then concentrated. The crude product thus obtained was dissolved in Et2O and the organic phase has been washed twice with brine, dried over Na2SO4 and concentrated to yield 8.8 g of an extract. The extract has been further purified by distillation over a Vigreux column (52–54° C./0.1 mbar) to yield 7.2 g of a mixture of (2E,7Z)-2,4,7-decatrienal (4Z:4E=88:8)(purity=96%, yield=96%). The product thus obtained had the same spectroscopic data as described in WO 01/58282.

Fuente