The textbook "Transformations Promoted by Hypervalent Iodine Reagents" by Zhiyu Jia offers a comprehensive analysis of the application of hypervalent iodine reagents in organic chemistry. It discusses innovative methods for the chlorination of aromatic compounds and describes novel approaches to the arylation of activated ketones. The presented procedures are not only efficient but also scalable, making them particularly valuable for practical applications in chemical synthesis. The book is aimed at professionals and students in mathematics and natural sciences who wish to engage with modern reaction mechanisms and their applications in organic chemistry. The detailed presentation of the reactions and the analysis of substrate diversity make it an important resource for research and development in this field.