Isolation of OH-bridged Ag(<scp>i</scp>)/Cu(<scp>iii</scp>) and ion-pair Cu(<scp>i</scp>)/Cu(<scp>iii</scp>) trifluoromethyl complexes with monophosphines
作者:Chang Xiao、Song-Lin Zhang
DOI:10.1039/c8dt03876g
日期:——
complex 3 exhibits a novel OH-bridged Ag(I)–Cu(III) dinuclear structure with XPhos-coordinated linear Ag(I) and square planar Cu(III) components. This is the first heterobimetallic Cu(III)–CF3 complex confirmed by both solution-phase NMR spectroscopy and solid state X-ray crystal structure analysis. Complex 3 is found to have the LUMO orbital of major σ*(Cu–CF3) nature and electrophilic CF3 ligands. Accordingly
A new entry for the oxidation of fluoroalkyl-substituted methanol derivatives: Scope and limitation of the organoiodine(V) reagent-catalyzed oxidation
作者:Yusuke Tanaka、Takashi Ishihara、Tsutomu Konno
DOI:10.1016/j.jfluchem.2012.03.002
日期:2012.5
Oxidation of various fluoroalkyl-substituted methanol derivatives under the influence of a catalytic amount of sodium 2-iodobenzenesulfonate and Oxone® in CH3CN or CH3NO2 was investigated in detail. The efficiency of the newly developed oxidation was also evaluated by comparison to other oxidations, such as Dess–Martin, PDC, and Swern oxidation.
钠2-碘和过硫酸氢钾的催化量的影响下的各种氟烷基取代甲醇衍生物的氧化®在CH 3 CN或CH 3 NO 2详细进行了研究。通过与其他氧化方法(如Dess-Martin,PDC和Swern氧化方法)进行比较,还评估了新开发的氧化方法的效率。
Darstellung und reaktionen von 1,2-diaza-3-sila-5-Cyclopentenen
作者:Uwe Klingebiel、Peter Werner
DOI:10.1016/s0022-328x(00)94229-3
日期:1979.10
(Fluorosilyl)hydrazones are obtained from the reaction of lithiated hydrazones with fluorosilanes. On subsequent reaction with tert-butyllithium, cyclization takes place, to give 1,2-diaza-3-sila-5-cyclopentenes; this cyclization is favoured by the nitrogen-substituent of the hydrazone. The CH2 group of the heterocyclic compounds is a nucleophilic centre, at which further substitutions are possible
Intramolecular rearrangement of organosilyl groups between oxygen and nitrogen in aminosiloxanes: A joint experimental–theoretical study
作者:Susanne Kliem、Uwe Klingebiel、Stefan Schmatz
DOI:10.1016/s0022-328x(03)00551-5
日期:2003.11
reacts with halosilanes to give 1-silylamino-1,3-siloxanes (1–4). The tetrakis(1-silylamino)siloxane 4 thermally condenses yielding a spiocyclic six-membered ring (5) and NH3. Lithium salts of animo-disiloxanes form silylamino-silanolates or amido-disiloxanes. The first includes a 1,3-silyl group migration from the oxygen to the nitrogen atonm. The energies of the isomeric lithium salts of model compunds
Bis(trimethylsilyl) hydrazine reacts with n-BuLi in tetrahydrofuran to give a dimeric lithium derivative consisting of a N-lithium-N′,N′-bis(trimethylsilyl)hydrazide and a N,N′-dilithium-N, N′-bis(trimethylsilyl)hydrazide unit. Tris(silyl)hydrazines and 1,2-diaza-3,5-disilacyclopentanes are obtained in reactions of lithiated bis(silyl)hydrazines with halogensilanes. Reaction mechanisms and crystal