The original work of the book consists of two research projects: - Chitosan-grafted-poly(4-vinylpyridine) as a Novel Copolymer Basic Catalyst for Synthesis of Arylazothiazoles and 1,3,4-Thiadiazoles under Microwave Irradiation. - Synthesis, Molecular Mechanics Calculations, and Anticancer Activities of Thiazoles, 1,3-Thiazines, and Thiazolidin-4-one using Chitosan-grafted-poly(vinylpyridine) as Basic Catalyst.