123930-79-0Relevant articles and documents
g-C3N4/metal halide perovskite composites as photocatalysts for singlet oxygen generation processes for the preparation of various oxidized synthons
Corti, Marco,Chiara, Rossella,Romani, Lidia,Mannucci, Barbara,Malavasi, Lorenzo,Quadrelli, Paolo
, p. 2292 - 2298 (2021/04/12)
g-C3N4/metal halide perovskite composites were prepared and used for the first time as photocatalysts forin situ1O2generation to perform hetero Diels-Alder, ene and oxidation reactions with suitable dienes and alkenes. The standardized methodology was made applicable to a variety of olefinic substrates. The scope of the method is finely illustrated and the reactions afforded desymmetrized hydroxy-ketone derivatives, unsaturated ketones and epoxides. Some limitations were also observed, especially in the case of the alkene oxidations, and poor chemoselectivity was somewhere observed in this work which is the first application of MHP-based composites forin situ1O2generation. The experimental protocol can be used as a platform to further expand the knowledge and applicability of MHPs to organic reactions, since perovskites offer a rich variety of tuning strategies which may be explored to improve reaction yields and selectivities.
Dicyclopentadiene Oxidation I. Uncatalyzed Liquid-Phase Oxidation of Dicyclopentadiene
Schnurpfeil, D.
, p. 481 - 488 (2007/10/02)
Dicyclopentadiene is oxidized by molecular oxygen to a mixture of the monoepoxides 2 and 3.The identification of the epoxides 2, 3 and 4 was executed with authentic samples prepared by epoxidation with peracetic acid or with tert-butylhydroperoxide in the presence of MoO2(acac)2.The main product is the substituted norbornene oxide 2.Allylic oxidation is also observed.Remarkable amounts of hydroperoxides can be determined iodometrically.The formation of allylic oxidation products 7, 8, 9 and 10 was proved by GC-MS-analysis.It is shown that in the uncatalyzed liquid phase oxidation of dicyclopentadiene no more than 50 percent of epoxides are formed.The bisepoxide 4 was found in small amounts only at higher conversions of the dicyclopentadiene.