METHOD FOR PREPARING 1,7,8,9-TETRAALKYL-4-METHYL-4-AZA-10-MAGNESATRICYCLO[5.2.1.0]DEC-8-ENE-3,5-DIONES Russian patent published in 2007 - IPC C07F3/02 

Abstract RU 2313529 C1

FIELD: chemistry of metalloorganic compounds, chemical technology.

SUBSTANCE: invention relates to methods for synthesis of novel organomagnesium compounds. Method involves interaction of disubstituted acetylenes with butylmagnesium bromide in the presence of a catalyst, in argon atmosphere under atmosphere pressure and temperature ˜200C, in ether solvent medium for 3 h followed by vacuum evaporation of ether, addition of N-methylmaleinimide at temperature -50C and stirring the reaction mass at temperature ˜200C in toluene medium for 6-8 h. The yield of the end product is 47-56%. Proposed method provides preparing the end compounds of the formula (1): wherein R means ethyl (Et), n-propyl (n-Pr), n-butyl (n-Bu) with high selectivity. Synthesis of these compounds is not describes in special literature. Synthesized compounds can be used in fine organic and metalloorganic synthesis, as co-catalysts in processes of oligo- and polymerization of olefins and coupled dienes.

EFFECT: improved method of synthesis.

1 tbl, 10 ex

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RU 2 313 529 C1

Authors

Dzhemilev Usein Memetovich

Ibragimov Askhat Gabdrakhmanovich

D'Jakonov Vladimir Anatol'Evich

Zinnurova Regina Adikovna

Golikova Majja Timofeevna

Salamatina Tat'Jana Petrovna

Dates

2007-12-27Published

2006-05-06Filed