FIELD: chemistry.
SUBSTANCE: invention relates to new catalysts of formula (I), where M1 is Zn, and M2 is Mg, and catalytic system containing these catalysts. Radicals of the formula (I) R1-R5, E1, E2, G, X are defined in any of the paragraphs 1–6 of the claim. Present invention also relates to methods for producing catalysts and to methods for performing reactions between i) carbon dioxide with epoxide; ii) epoxide and anhydride or iii) lactide and/or lactone in the presence of these catalysts and catalytic systems. Method of producing the catalyst comprises the steps of: a) carrying out the reaction of a ligand of formula (Ib) with a compound of formula (IV): M1(RM1)n (IV), where n corresponds to the oxidation state M1; RM1 is independently selected from hydrogen and optionally substituted alkyl, alkenyl, alkynyl, cycloalkyl, cycloalkenyl, cycloalkynyl, aryl, heteroaryl, amino, alkoxy, aryloxy, alkylthio, or alkylaryl; and b) reacting the product of step a) with a compound of the formula (V): M2(X)m (V), m corresponds to the oxidation state of M2, and c) optionally adding a compound containing G; where M1 and M2 are different and independently selected from Mg, Zn, Fe, Co, Al and Cr; R1–R5, E1, X, Rx, G defined in paragraph 11 of the claim.
(I),
(Ib).
EFFECT: increased activity.
15 cl, 18 dwg, 1 ex, 9 tbl
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Authors
Dates
2019-02-12—Published
2015-02-06—Filed