Malononitrile → Dihydro-2H-pyran-4,4(3H)-dicarbonitrile

Beteiligte Stoffe

Reaktionsschritte

According to Flowchart I dichloroethyl ether (1) is reacted with malononitrile (2) in the presence of potassium carbonate in acetonitrile at reflux, giving tetrahydro-4H-pyran-4,4-dicarbonitrile (3) which is then reduced with 1N borane in tetrahydrofuran followed by treatment with hydrochloric acid, giving tetrahydro-4H-pyran-4,4-dimethanamine dihydrochloride (4) which is then reacted with a mixture of sodium acetate and potassium tetrachloroplatinate in water, giving the intermediate compound dichloro(tetrahydro-4H-pyran-4,4-dimethanamine-N,N')platinum (5). ##STR9##

Herkunft & Nachweise