The design of efficient carbonate interchange reactions with catechol carbonate
作者:T. Tabanelli、E. Monti、F. Cavani、M. Selva
DOI:10.1039/c6gc03466g
日期:——
Catechol carbonate (CC) has been investigated as an innovative and highly active reactant for carbonate interchange reactions (CIRs).
邻苯二酚碳酸酯(CC)已被研究作为碳酸酯交换反应(CIRs)的创新和高活性试剂。
Selective catalytic etherification of glycerol formal and solketal with dialkyl carbonates and K<sub>2</sub>CO<sub>3</sub>
作者:Maurizio Selva、Vanni Benedet、Massimo Fabris
DOI:10.1039/c1gc15796e
日期:——
case of dimethyl carbonate (DMC). Both GlyF and solketal were efficiently alkylated by DMC to produce the corresponding O-methyl ethers with selectivity up to 99% and excellent yields (86–99%, by GC). The high selectivity could be accounted for by a mechanisticstudy involving a combined sequence of methylation, carboxymethylation, decarboxylation and hydrolysis processes. The O-methylation of GlyF
Methylation and carboxymethylation of oxyalkyl-1,3-dioxacycloalkanes with dimethyl carbonate catalyzed by W(CO)6 and Mn2(CO)10
作者:R. I. Khusnutdinov、N. A. Shchadneva、Yu. Yu. Mayakova、G. Z. Raskil’dina、S. S. Zlotskii
DOI:10.1134/s107036321508006x
日期:2015.8
W(CO)(6)-catalyzed condensation of 2,2-dimethyl-1,4-oxymethyl-1,3-dioxolane with dimethyl carbonate has resulted in selective formation of methyl ester of the starting heterocyclic alcohol. Mn-2(CO)(10) has catalyzed oxymethyl-1,3-dioxacycloalkane transformation into the corresponding non-symmetrical and symmetrical carbonates; selectivity of the process is determined by the alcohol-to-dimethyl carbonate molar ratio. A mixture of 5- and 6-mer formals of glycerol and 1,2,4-butanetriol has selectively reacted with dimethyl carbonate in the presence of Mn-2(CO)(10) to form a mixture of the corresponding non-symmetrical carbonates.
US7858606B2
申请人:——
公开号:US7858606B2
公开(公告)日:2010-12-28
Continuous-Flow<i>O</i>-Alkylation of Biobased Derivatives with Dialkyl Carbonates in the Presence of Magnesium-Aluminium Hydrotalcites as Catalyst Precursors
The base‐catalysed reactions of OH‐bearing biobased derivatives (BBDs) including glycerol formal, solketal, glycerol carbonate, furfuryl alcohol and tetrahydrofurfuryl alcohol with non‐toxic dialkyl carbonates (dimethyl and diethyl carbonate) were explored under continuous‐flow (CF) conditions in the presence of three Na‐exchanged Y‐ and X‐faujasites (FAUs) and four Mg–Al hydrotalcites (HTs). Compared