A Novel Synthesis of Selenides and Selenol Esters Using Liquid-Liquid Phase-Transfer Catalysis
摘要:
This article describes the first attempt to synthesize selenides and selenol esters prepared from the reaction of 1-benzyl or 1-acylselenophenylmethaniminium halides and organic halides under liquid-liquid phase-transfer conditions. This method also can be applied to the synthesis of diseleno tweezers-like molecules as metalloreceptors.
GC: A Review of the State-of-the-Art Column Technologies for the Determination of ppm to ppb Levels of Oxygenated, Sulfur, and Hydrocarbon Impurities in C1-C5 Hydrocarbon Streams
作者:J. de Zeeuw、C. Duvekot、J. Peene、P. Dijkwel、P. Heijnsdijk
DOI:10.1093/chromsci/41.10.535
日期:2003.11.1
The determination of ppm to ppb levels of sulfur, oxygen-containing, and certain reactive hydrocarbons in bulk hydrocarbon feedstocks is important in the petroleum and petrochemical industry to minimize catalytic deactivation and improve product quality. Gas chromatography, coupled with selective or ultratrace universal detection (or both), is ideal in most cases for such analysis. However, to enhance
Rates of oxidation of o-nitrobenzeneselenenyl compounds by m-chloroperoxybenzoic acid and the rate of reaction of o-nitrobenzeneselenol with o-nitrobenzeneselenenic acid