FIELD: chemistry.
SUBSTANCE: invention relates to a method for synthesis of 2,3,4,5-tetraalkylmagnesacyclopenta-2,4-dienes of formula (I) 
. The method is realised by reacting disubstituted acetylenes R-≡-R, (where R=C2H5, H-C3H7, H-C4H9) with an organomagnesium compound in the presence of zirconocene dichloride Cp2ZrCl2. The organomagnesium compound used is diethylmagnesium (C2H5)2Mg. The reaction takes place in molar ratio R-≡-R:(C2H5)2Mg:Cp2ZrCl2 equal to 10:(11-15):(0.3-0.4) in an argon atmosphere at atmospheric pressure in ether solvents (diethyl, dipropyl and di-iso-propyl ether) for 3-4 hours.
EFFECT: invention shortens the reaction time and increases output of the end product.
1 cl, 1 ex, 1 tbl
| Title | Year | Author | Number |
|---|---|---|---|
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|
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| METHOD FOR SYNTHESIS OF 3,4-DIALKYLMAGNESACYCLOPENTANES | 2009 |
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|
RU2290405C1 |
