Method for the preparation of ferroceny1-1,3-butadiene
AssigneeChung-Shan Institute of Science and Technology
InventorShean-Jeng Jong
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Abstract
Ferrocenaldehyde or ferrocenyl methyl ketone and allyl bromide are reacted in an ether solvent and in the presence of magnesium metal as a catalyst. The liquid portion of the reaction mixture is introduced into a silica gel column, wherein the weak acidity of the silica gel is able to dehydrate the reaction intermediate 1-ferrocenyl-3-buten-1-ol product. The column is eluted with n-hexane, and after evaporating the solvent from the eluate collected, a purified ferrocenyl-1,3-butadiene product is obtained.
Claims7
A method for synthesizing ferrocenyl-1,3-butadiene having the following Formula III, which comprises:
- a) reacting ferrocenecarbonyl having the following Formula I with allyl halide having the following Formula II in an ether solvent and in the presence of magnesium as a catalyst;
- b) introducing a liquid portion of the resulting reaction mixture into a silica gel column;
- c) eluting the silica gel column with a solvent of low polarity;
- d) collecting the resulting eluate from the column;
- e) and evaporating the solvent from the eluate to a solid comprising ferrocenyl- 1,3-butadiene:
- wherein R is hydrogen or C1-C4 alkyl;
- wherein X is halogen;
- wherein R is the same as above.
Dependencies are inferred from the claim text.