The electrophilic reaction of methyl pyropheophorbide-a (MPP-a) demonstrates that the electrophilic addition reaction and the electrophilic substitution reaction occur on the vinyl group at 3-position and 20-meso-position, respectively.

Ab initio and DFT(B3LYP) calculations using the 6-31G~(**) basis set were employed to study the mechanism of the nucleophilic addition reaction between silyleneimine and water .

DFT calculations at the B3LYP/6-311++G(d,p) level were employed to study the mechanism and the potential energy surface of the nucleophilic addition reactions between model compounds of four heavy ketones and water.

In this paper,the nucleophilic addition reactivity ofπ-propargyl,π-allyl palladium intermediate to aldehydes,ketones and imines was investigated.

As low CB content aids the nucleophilic addition reaction between epoxy resin and isophorone diisocyanate and subsequently the development of cross-links which will restrict the mobility of polymer matrix and reduce its detrimental effect on electrical conducting networks developed by CB.

Comparsion of the electrophilic addition activity between monoene and conjugated diene;

The rate constants of radical and electrophilic addition to alkenes are dominated by different factors.

Synthesis of the substance from aniline and hexafluoroacetone involves electrophilic addition,acylation and reduction.

When alkene’s electrophilic addition reaction is judged through the traditional view of Markovnikov’s rule, the asymmetric alkene shoulod contain a hydrogen atom.