The microwave-assisted reactions of 4-[(6-R-4-oxochromen-3-yl)methylene]-2-phenyl-1,3-oxazol-5(4H)-ones 1a-1c with N-bases are described. Substituted benzamides 2a2c were prepared by reaction of 1a with primary amines in the presence of acetic acid and potassium acetate. Benzamides 3a and 3b were synthesized by reaction of 1b with piperidine and morpholine, respectively. Oxazolone 1 reacted with o-phenylenediamine to give benzoimidazole derivative 4. 3-Benzamido-1-[(pyridin-4-yl)carboxamido]-2,5-dioxo-3,10adihydro-2H-chromeno[2,3-b]pyridine 5 was prepared by reaction of 1a with isoniazid in acetic acid and 5-[(6-bromo-4-oxochromen-3-yl)methylene]-3-phenyl-2,5-dihydro-1H[1,2,4]triazine-6-one 6 was synthesized by reaction of 1c with hydrazine in methanol.

The computational and experimental analyses of the esterification of maleic anhydride using straight chain alcohols were used as a model to probe product formation. It was determined that both the monoester and diester products formed under the experimental parameters for alcohols up to 1-propanol. The computational model using semi-empirical calculations found that differences greater than 50 kJ/mol produced the monoester as the sole product. However, when the energy difference was less than 50 kJ/mol, both the diester and monoester were found. This gives a good relationship between experimental data and mathematical calculations for the prediction of product formation. The computational and experimental analyses of the esterification of maleic anhydride using straight chain alcohols were used as a model to probe product formation. It was determined that both the monoester and diester products formed under the experimental parameters for alcohols up to 1-propanol. The computational model using semi-empirical calculations found that differences greater than 50 kJ/mol produced the monoester as the sole product. However, when the energy difference was less than 50 kJ/mol, both the diester and monoester were found. This gives a good relationship between experimental data and mathematical calculations for the prediction of product formation.

An simple, general, efficient and greener method has been developed for one pot regioselective synthesis of pyrimido[1,2-a]benzimidazole is described. Starting from the 2-aminobenzimidazole, malononitrile and carbonyl compound, the methodology involves a ring closure by different ways based on the reaction medium was confirmed by NOE and X-ray studies.

Starting Starting from 5,6-disubstituted-3H-thieno[2,3-d]pyrimidin-4-ones, novel 1,2,9,11-tetrasubstituted-7H-thieno[2',3':4,5]pyrimido[6,1-b]quinazolin-7-ones could be reached in two steps through a von Niementowski reaction, which involves condensation of substituted anthranilic acids with a 4-chloro-5,6-disubstituted-3H-thieno[2,3-d] pyrimidines. Microwave irradiation in acetic acid media was used in order to improve reactions where conventional heating was limited.

A number of unsubstituted cyclic imides were synthesized from cyclic anhydrides, hydroxylamine hydrochloride NH 2 OH (HCl), and 4-N,N-dimethylaminopyridine (DMAP) under microwave irradiation in a mono-mode microwave. This synthesis gave the unsubstituted cyclic imides in high yields (61-81%) instead of the predicted N-hydroxy cyclic imides which were found to be the minor products.

Irradiation of e-caprolactone with microwaves in the presence of secondary or primary amines lead to e-hydroxyamides in good yields.

Microwave assisted synthesis of 2,4,6-trishydrazino-1,3,5-triazine from hydrazine and cyanuric chloride is achieved in good yield. Its reaction with acetone and benzaldehyde yields the corresponding trishydrazones in good yields and short reaction times using MAOS.

Some preliminary studies on chemical modification of cotton(cellulose) by cyclodextrins are presented. As a chemical linking agent a citric acid was applied. The reaction of cyclodextrin attaching to cellulosic fibre was controlled by means of weight of the samples as well as a new spectroscopic method. Obtained results may proof the esterification reaction of cellulose repeating unit in the presence of ß-cyclodextrin and hydrogenposhate alkali salt as catalyst.

The new route to novel class of natural/synthetic polymer system is described. The material based on common and natural carbohydrates i.e. starch and carrageenan as well as synthetic, conducting polymer, polyaniline dissolved in dimethylsulfoxide is shown as a system with interesting viscoelastic properties. The presented research covered synthetic aspects of a new material as well as some rheological properties by means of mechanical and relaxation spectra.

The formation of new supramolecular dendrimers from interlocked host/guest unimers is reported. Unimer entities have two host binding sites (ßCD) and two guest binding sites (two adamantly or two p-tert-butylbenzoate moities). Hosts and guest residues are linked through an EDTA bridge. The formation of dendrimer-like (Cayley tree) structures is demonstrated by TEM measurements.