Bicyclische Verbindungen—X ringerweiterung von norbornanderivaten—III
作者:W. Kraus、P. Schmutte
DOI:10.1016/s0040-4020(01)82460-1
日期:1968.1
The deamination of endo- and exo-2-methyl-2-aminomethyl-norbornane with nitrousacid and the hydrolysis of endo- and exo-2-methyl-2-tosyloxymethyl-norbornane has been investigated by gas-chromatography. The ratio of tertiary methyl-bicyclo[3.2.1.]octanols-3 and -2 formed by carbon shift involving the C-1, C-2 bond and the C-2, C-3 bond, respectively, is chiefly controlled by steric factors. From the
A Simple Route to Selective Diels-Alder Reactions Using Modified Zeolite Y
作者:H. Mahmoudi Najafi、M. Ghandi、F. Farzaneh
DOI:10.1246/cl.2000.358
日期:2000.4
Synthetically useful Diels-Alder reactions of different dienophiles with cyclopentadiene in the presence of chirally modified zeolite Y as simple and accessible medium led to high rate and diastereoselectivity and low to moderate enantioselectivity.
在手性改性沸石 Y 作为简单易得的介质存在下,不同亲二烯体与环戊二烯的合成有用的 Diels-Alder 反应导致高速率和非对映选择性以及低至中等的对映选择性。
Endo-selective Diels–Alder reaction of methacrylonitrile: application to the synthesis of Georgywood
Diels–Alder reactions of alkyl-substituted dienes with acrylonitriles give good yields and endo-selectivities if catalyzed by (organo)aluminum, (organo)boron or gallium halides. The activity of these group IIIa Lewisacids in this reaction correlates with the coordination strength of their nitrile complexes, which deactivate Lewisacids sufficiently, so that the subsequently added diene partner undergoes
An efficient recyclable peroxometalate-based polymer-immobilised ionic liquid phase (PIILP) catalyst for hydrogen peroxide-mediated oxidation
作者:Simon Doherty、Julian G. Knight、Jack R. Ellison、David Weekes、Ross W. Harrington、Christopher Hardacre、Haresh Manyar
DOI:10.1039/c2gc16679h
日期:——
metathesis polymerisation (ROMP) of a pyrrolidinium-functionalised norbornene-based monomer with cyclooctene. The derived peroxophosphotungstate-based polymer-immobilised ionicliquid phase (PIILP) catalyst is an efficient and recyclable system for the epoxidation of allylic alcohols and alkenes, with only a minor reduction in performance on successive cycles.