Principally speaking, transition metal-mediated approaches toward the carbocycle can be divided into four kinds: (a) intramolecular cyclization (b) cycloaddition (c) multi-component cyclization (cyclization via tandem reactions) (d) cyclization of dianions.

The Influences of Anions on the Photoreduction and Electroredox Properties of Viologen Compounds;

Unlike neutral C60,which is an electron-deficient molecule and reactive towards nucleophiles,C60 anions are electron-rich species and reactive towards electrophiles.

Anionic functional finish and the finished fabrics used in home life will generate anions continuously,which neutralize the cations in the air,purify the air,promote the blood circulation,and yield the bactericidal,deodorant and far IR heat-storage effects.

Influence of electric field inhomogeneity to photodetachment of negative ions in external fields;

This paper introduces a new air negative ions producer with liquid electrodes.

In order to raise the extracted current density of ions,negative ions are injected in the SPT from the cathode.

tudy of Anionic Additive in Plastic Evolving;

Characteristic Study of Polyacrylonitrile Spinning Solution Containing Nano-anion;

Preparation and property of anionic polyester fiber;

It is mainly introduced the new functional finish technology applied on pure cotton knitted fabrics from the aspects of cool feeling,antibiotic,ultraviolet proof,anionic finish and the application effectiveness.