The influence of ligand and cooperative metal on carbonyl insertion in heterobimetallic Rh-M species was investigated at the B3LYP level of density functional theory.

Pullout ture experiment on the inserted foundation;

Along with the further progress of the West Development, and wide application of the latticed steel tubular tower, double circuits on same tower and many circuits on same tower in UHV transmission lines, inserted foundation also got the extensive application, but theoretical study is a long way behind engineering practice.

Study on Simulation of Vibrant Frequency of Carbonyl;

Two isoxazole intermediates containing 1,2,3triazolyl and carbonyl,which can also be used as intermediates for synthesis of new heterocyclic compounds,have been synthesized.

0,the amount of oxidation element Ⅰ 4%,the temperature 85 ℃ and the time 4 h;the optimum conditions to obtain the maximal carbonyl content was: pH=5.

The conditions/reagents for protecting carbonyl groups as acetals, thioacetals and oxothioacetals as well as the corresponding deprotection processes published during the period of 2000～2006 are briefly surveyed.

This article narrates the transformation of carbonyl group in optically active epoxy ketones under different reagents and enumerates some synthetic applications of this kind of transformation.

The chemical reductants fail to reduce carbonyl group under ambient conditions.