A process for the preparation of an alkylene carbonate, said process comprising contacting the corresponding alkylene oxide with carbon dioxide in the presence of water and in the presence of a catalytic composition comprising an organic base neutralised with a hydrogen halide, wherein the organic base comprises a carbon-based compound comprising one or more nitrogen atoms with at least one free electron pair and/or one or more phosphorous atoms with at least one free electron pair and wherein the organic base has a pK
a
greater than 8.
PRECATALYST FOR SHIBASAKI'S RARE EARTH METAL BINOLATE CATALYSTS
申请人:THE TRUSTEES OF THE UNIVERSITY OF PENNSYLVANIA
公开号:US20160145273A1
公开(公告)日:2016-05-26
Disclosed herein are schemes for the synthesis of novel hydrogen-bonded rare earth-BINOLate precatalyst complexes, the precatalysts, per se, and their application for the generation of anhydrous REMB catalysts by cation-exchange from metal halides.
White Light-Emitting Diodes Based on One-Dimensional Organic–Inorganic Hybrid Metal Chloride with Dual Emission
作者:Xiaohua Cheng、Sijia Yue、Runan Chen、Jun Yin、Bin-Bin Cui
DOI:10.1021/acs.inorgchem.2c02085
日期:2022.10.3
systematically explore the influence of halogen on crystal structures and photoluminescence (PL) properties in 1D organic–inorganic hybrid MHs. Under ultraviolet excitation, TMGPbBr3 and TMGPbI3 exhibit BE originating from self-trapped excitons (STEs), while TMGPbCl3 manifests the special blue-white dual emission, which is contributed by STEs in inorganic frameworks and free excitons (FEs) in the organic component
Oxidative nitroalkylation of β-ketoamides and nitroalkanes, mediated by hypoiodide generated from tert-butyl hydrogen peroxide and a catalytic amount of guanidinium iodide, afforded the corresponding α-nitroalkyl-β-ketoamides in up to 97% yield.