FIELD: chemistry.
SUBSTANCE: method involves combined reaction of disubstituted acetylenes with ethylmagnesiumdibromide in the presence of a zirconocene dichloride catalyst at excess ethylene pressure of 0.025 MPa and room temperature in a mixture of solvents diethyl ether: tetrahydrofuran (1:1). Output of the end product is 68-89%.
EFFECT: high output of end product.
1 cl, 1 ex, 1 tbl
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