Reaktion #1686972

Reaktionsgleichung

spiro-[2.4]-heptan-4-one

4-chlorobenzaldehyde

→

5-(4-chlorobenzylidene)spiro[2.4]-heptan-4-one

Lösungsmittel

sodium hydoxide

Reaktionsbedingungen

Vorschrift

It is known that spiro-[2.4]-heptan-4-one can be reacted with 4-chlorobenzaldehyde in methanolic sodium hydoxide solution to give 5-(4-chlorobenzylidene)spiro[2.4]-heptan-4-one (see DE-A 43 20 498, Example 1). A disadvantage is the extremely long reaction time required, of 50 hours.

Quelle