Reaktion #470029

Reaktionsgleichung

dibromoethylene

magnesium

2,5,5-trimethyl-2-(2-bromoethyl)-1,3-dioxane

→

bromo[2-(2,5,5-trimethyl-1,3-dioxan-2-yl)ethyl]magnesium

Lösungsmittel

tetrahydrofuran

tetrahydrofuran

Reaktionsbedingungen

Aufarbeitung

1. 1
   Temperaturcooled

Vorschrift

In a nitrogen atmosphere, 5 ml of tetrahydrofuran and 0.1 ml of dibromoethylene were added to 3.4 g of metallic magnesium, the mixture was ice-cooled, and 30.0 g of 2,5,5-trimethyl-2-(2-bromoethyl)-1,3-dioxane and 75 ml of tetrahydrofuran were added dropwise to that mixture simultaneously over 1.5 hours. After completion of the dropping, the mixture was stirred for 1 hour with ice cooling and further at room temperature for 30 minutes to give bromo[2-(2,5,5-trimethyl-1,3-dioxan-2-yl)ethyl]magnesium (1.16 mol/l, tetrahydrofuran solution).

Quelle