Hemilabile
<i>N</i>
‐heterocyclic carbene and nitrogen ligands on Fe (II) catalyst for utilization of CO
<sub>2</sub>
into cyclic carbonate
作者:Fei Chen、Sheng Tao、Ning Liu、Cheng Guo、Bin Dai
DOI:10.1002/aoc.6099
日期:2021.2
Six Fe (II) complexes were synthesized based on the concept of the hemilability of hybrid ligands, and their catalyticbehaviors and performances were evaluated for the fixation of CO2 via the cycloaddition of epoxides. The catalytic potential of the Fe (II) complexes, in combination with bis(triphenylphosphoranylidene)ammonium chloride, have been proved to achieve the efficient conversion in some
Organocatalyzed Synthesis of Oleochemical Carbonates from CO<sub>2</sub>and Renewables
作者:Hendrik Büttner、Johannes Steinbauer、Christoph Wulf、Mehmet Dindaroglu、Hans-Günther Schmalz、Thomas Werner
DOI:10.1002/cssc.201601163
日期:2017.3.22
Bifunctional phosphorus‐based organocatalysts proved to be highly efficient for the atom‐economic reaction of CO2 and epoxidized oleochemicals. Notably, those products are obtained from CO2 and renewable feedstocks only. Structure–activity relationships have been deduced from a screening of 22 organocatalysts in a test reaction. Bifunctional catalysts based on a phosphonium salt bearing a simple phenolic
Reaction of epoxides with activated DMSO reagent. General method for synthesis of α-chlorocarbonyl compounds: Application in asymmetric synthesis of (3S)-2,3-oxidosqualene
作者:Sushil Raina、Vinod K. Singh
DOI:10.1016/0040-4020(94)01111-c
日期:1995.2
Reaction of a variety of epoxides with DMSO-Oxalyl chloride in the presence of a catalytic amount of methanol and a base was studied. Disubstituted epoxides gave α-chloroketones in high yields. Aliphatic terminal epoxide underwent opening reaction to provide α-chloroketone as a major product. Trisubstututed epoxides provided α-chloroketones as major products through the formation of more stable carbocation