Zur Kenntnis des Kohlenstoffringes. 58. Mitteilung Über die Reaktion einiger vielgliedriger Cycloalkyl-bromide mit Magnesium
作者:L. Ruzicka、P. Barman、V. Prelog
DOI:10.1002/hlca.19510340144
日期:——
10gliedrigen Cycloalkyl-bromide in ätherischer Lösung mit Magnesium und Umsetzung des erhaltenen Reaktionsproduktes mit Kohlendioxyd wurden neben kleineren Mengen Cycloalkan-carbonsäuren hauptsächlich Kohlenwasserstoff-Gemische erhalten, die aus Cycloalken, Cycloalkan und Dicycloalkyl bestehen. Dieses ungewöhnliche Verhalten wird auf die leichte Bildung der freien Cycloalkyl-Radikale mit einer mittleren Ringgliederzahl
Bei-der Reaktion der 7- bis 10gliedrigen环烷基溴化物,位于德国的镁和铀矿石中。DiesesungewöhnlicheVerhalten wird auf die leichte Bildung der freien环烷基-Radikale mit einer mittleren Ringgliederzahlzurückgeführt。
Efficient thermochemical alkane dehydrogenation and isomerization catalyzed by an iridium pincer complex
作者:Fuchen Liu、Alan S. Goldman
DOI:10.1039/a900631a
日期:——
(i–PrPCP)IrH2 is found to be a remarkably effective solution-phase catalyst for the ‘acceptorless’ thermochemical dehydrogenation of cycloalkanes (and isomerization in the case of cyclodecane), and the first such catalyst reported to effect the dehydrogenation of n-alkanes.
Diradical-Promoted Two-Carbon Ring-Expansion Reactions by Thermal Isomerization: Synthesis of Functionalized Macrocyclic Ketones
作者:Georg Rüedi、Hans-Jürgen Hansen
DOI:10.1002/hlca.200490150
日期:2004.7
of functionalized macrocyclic ketones has been developed. Pyrolysis of medium- and large-ring 3-vinylcycloalkanones by dynamic gas-phase thermo-isomerization (DGPTI) at 600–630° yielded, under insertion of a previously attached vinyl side chain by means of a 1,3-C shift, the corresponding γ,δ-unsaturated cycloalkanones. The yield of the two-carbon ring-expanded ketones greatly depended on the relative
Epoxidation of Cyclooctene Using Water as the Oxygen Atom Source at Manganese Oxide Electrocatalysts
作者:Kyoungsuk Jin、Joseph H. Maalouf、Nikifar Lazouski、Nathan Corbin、Dengtao Yang、Karthish Manthiram
DOI:10.1021/jacs.9b02345
日期:2019.4.17
oxide nanoparticles (NPs) are shown to catalyze cyclooctene epoxidation with Faradaic efficiencies above 30%. Isotopic studies and detailed product analysis reveal an overall reaction in which water and cyclooctene are converted to cyclooctene oxide and hydrogen. Electrokinetic studies provide insights into the mechanism of olefinepoxidation, including an approximate first-order dependence on the substrate
Chromium pillared clay catalysed allylic oxidation and oxidative deprotection of allyl ethers and amines : a simple and convenient procedure
作者:Boyapati M. Choudary、Annavajhula Durga Prasad、Vinukonda Swapna、Velaga L.K. Valli、Vedantam Bhuma
DOI:10.1016/s0040-4020(01)88197-7
日期:——
An efficient method for allylic oxidation of cyclic and acyclic alkenes to the corresponding α,β-unsaturated carbonyl compounds in good yields was described using catalytic amounts of chromia-pillared montmorillonite and equimolar quantities of tert-butyl hydroperoxide. This is also a convenient method for selectiveoxidativedeprotection of allylethers and amines using same system. Incidentally this