Аннотация:The possibilities of organophosphorus compounds in organic synthesis are so great that even the simplest of them are the basis for creating a variety of new classes of organic molecules. Over the past 20 years, under the leadership of academician RAS Zefirov N.S. we carried out systematic studies in some fundamental directions of organic chemistry using organophosphorus compounds. A new catalytic variant of the Kabachnik-Fields and Pudovik reactions was developed using phthalocyanines as homogeneous and heterogeneous catalysts, and a wide range of aminophosphonates, including those based on amino acids and peptides. [1-2]. A systematic study of mixed phosphonium-iodonium ylides was carried out, and two heterocyclization reactions with their participation, leading to new phosphorus-containing heterocyclic systems, were discovered. [3-5]. Recently we turned to the problem of creating biomarkers with specified photophysical properties and developed approaches to tricarbocyanines containing hydrophilic phosphonate groups.