Reference of Diethyl cyclobutane-1,1-dicarboxylate《Preparation of MgCl2-supported Ziegler-Natta catalyst systems with new electron donors》 was published in 2010. The authors were Marques, Maria de Fatima V.;Cardoso, Renata da Silva;Galvao da Silva, Micheli, and the article was included in《Applied Catalysis, A: General》. The author mentioned the following in the article:
In the present work, the effect of new internal and external electron donors for Ziegler-Natta systems of the type MgCl2/internal electron donor (ID)/TiCl4/external electron donor (ED)/AlR3 was compared with the conventional use of Bu phthalate and dimethoxy-diphenylsilane as electron donors. Catalyst systems employing various internal and external donors were evaluated in propylene polymerization The polymers were characterized by IR absorption spectroscopy, differential scanning calorimetry and heptane extraction The prepared catalysts with the new internal donors produced polypropylene with isotactic index up to 98% under the polymerization conditions employed. And Diethyl cyclobutane-1,1-dicarboxylate (cas: 3779-29-1) was used in the research process.
Diethyl 1,1-cyclobutanedicarboxylate(cas:3779-29-1 Reference of Diethyl cyclobutane-1,1-dicarboxylate) reacts with silicon to form diethyl esters and magnesium to form magnesium salts. The reaction time for this compound is short, which may be due to its ability to undergo debromination.
Reference:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics