Synthesis of bis (cyclopentadienyl) and bis (indenyl) ruthenium complexes
AssigneeBoulder Scientific Company
InventorsKarin A. Voll Barclay, Jeffrey M. Sullivan, Dawn A. Arkin, Fredric R. Askham
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Abstract
A process for preparing a cyclopentadienyl or indenyl ruthenium complex by treatment of a cyclopentadienyl or indenyl compound with ruthenium trichloride dihydrate and magnesium powder in an alkanol at 10° C. to −30° C. is described.
Claims11
A process for producing a cyclopentadienyl or an indenyl ruthenocene complex which comprises treating a cyclopentadienyl or an indenyl compound with ruthenium trichloride hydrate and magnesium powder.
The process which comprises:
- (i) treating a C2 to C5 monoalkyl cyclopentadiene with ruthenium trichloride hydrate and magnesium powder,
- wherein said treating is accomplished in the presence of ethanol and
- wherein said treating takes place at a temperature of 10° C. to −30° C. to produce a reaction mixture;
- (ii) agitating said step (i) reaction mixture at about 10° C. to about 15° C. for a time period appropriate to complete the reaction
- wherein an ethanol solution of C2 to C5 ruthenocene is produced in situ in said reaction mixture;
- and
- (iii) isolating said C2 to C5 ruthenocene from said step (ii) ethanol solution.
A process for producing ruthenocene which comprises treating cyclopentadiene with ruthenium trichloride hydrate in the presence of magnesium powder.
A method for producing ethyl ruthenocene which comprises:
- (i) providing an ethanol solution of ruthenium trichloride hydrate;
- (ii) providing a slurry of magnesium powder and ethyl cyclopentadiene in ethanol;
- and
- (iii) adding said step (i) solution to said step (ii) slurry at a temperature of from about 10° C. to about −10° C.
- wherein a reaction mixture containing an ethanol solution of ethyl ruthenocene is produced.
Dependencies are inferred from the claim text.