Polyether ether ketones are prepared by the nucleophilic reaction of hydroquinone with 4,4'-difluorodibenzophenone using diphenylsulfone as solvent in the presence of anhydrous K_2CO_3/Na_2CO_3;the effect of the reaction temperature on molecular weights is discussed.

Polyether ether ketones were prepared by the nucleophilic reaction of hydroquinone with 4,4'-difluorobenzophenone using diphenylsulfone solvents in the presence of anhydrous K_2CO_3/Na_2CO_3,of which inherent viscosity was 0.

Polyether ether ketone ketone was prepared by the nucleophilic reaction of hydroquinone with 1,4-bis (4-fluorbenzoyl)-benz.

Significantly enhanced reactivities of the nucleophilic substitution reactions induced by microwaves in ionic liquids;

Solvent's Influence on Nucleophilic Substitution Reaction's Rate;

The nucleophilic substitution reaction of 2-aryloxyl-4-chloro pyrimidy with sodium allylalconol;

The synthetic methods of C - glycosides including electrophilic substitutions, nucleophilic sugar substitutions, rearrangements and cycloadditions, transition metal catalysis, anomeric radicals reactions and sugar ring formations were briefly reviewed.

The nucleophilic substitution of potassium salts of dicarbonylimide 3a～3g with 2-chloro- 1-oxy-5-chloromethylpyridine prepared by oxidation of the nitrogen of 2-chloro-5-chloromethylpyridine gave seven new N-(2-chloro-l-oxy-5-pyridinemethyl)dicarbonylimides via conventional method and mi- crowave irradiation technique.

By the nucleophilic substitution of S for Br on 3-bromo-1,3,4,5-tetrahydro-2-oxo-1H-benazepine, 32 derivatives of tetrahydro-2-oxo-1H-benazepine were synthesized.

With the help of phase transfer catalyst tetrabutylammonium iodide (TBAI), and by means of nucleophilic substitution, four types of Nchloroacetylsubstituted nitrogencontaining benzoheterocycles were introduced into pyrimidines by the formation of ether.

Aripiprazole in overall yield of 68% was synthesized from 2,3-dichloroaniline by a three-step nucleophilic substitution reaction in yield of 83%,91% and 90%,respectively.

According to teaching practice, some factors such as polarization property of ambident nucleophiles, solvent effect, structure of nucleophilic acceptance body affecting ambident nucleophilic substitution reaction are discussed with the present achievements in teaching and scientific research both at home and abroad in this way.

The compound (C 16 H 14 O 4) 1,4-bis(o-benzenmethyl)-1,4-butyl dioxide has been synthesized by nucleophilic substitution reaction of Salicylaldehyde and 1,2-ethylene dioxide.