2388-99-0Relevant articles and documents
Synthesis of fatty ketoesters by tandem epoxidation-rearrangement with heterogeneous catalysis
Dorado, Vicente,Fraile, José M.,Gil, Lena,Herrerías, Clara I.,Mayoral, José A.
, p. 1789 - 1795 (2020/04/09)
Unsaturated fatty esters can be easily transformed into ketoesters through a two-step process. The highly efficient epoxidation is carried out with tert-butyl hydroperoxide (TBHP) in α,α,α-trifluorotoluene (TFT) using a Ti-silica heterogeneous catalyst. The formed epoxide is easily rearranged by a heterogeneous Br?nsted acid, with Nafion-silica SAC13 as the most efficient one. Both reactions can be combined in a tandem process, with separation of the Ti-silica catalyst by filtration from the reaction medium and addition of the second acid catalyst to perform the second reaction. Each catalyst is separated individually and can be reused, with or without re-activation, under the same conditions to maximize the productivity.
ELECTROGENERATED ACID AS A POWERFUL CATALYST FOR TRANSFORMATION OF EPOXIDES TO KETONES AND ACETONIDES
Uneyama, Kenji,Isimura, Akihiro,Fujii, Kazuyuki,Torii, Sigeru
, p. 2857 - 2860 (2007/10/02)
Electrochemical Transformation of epoxides 1 to ketones 2 and acetonides 3 were achieved by using an electrogenerated acid-catalyst.A combination of M(ClO4)n with polar aprotic solvents is useful for the electrochemical transformation.
