Over the years, the increasing knowledge of transition metal catalysis has resulted in an enormous advance of green chemical technologies, as exemplified by such processes as C-H functionalization, direct cross coupling, and cascade or multicomponent reactions. The so-called privileged ligands have been reported to enhance the catalytic activity of various transition metals. The ultimate goal of my research is to develop another class of privileged ligands for organo- and transition-metal catalysts. During the last several years of research, we have observed the remarkable reactivity of 2,2’-dihydroxybenzophenone, which is based on a new phosphorus ligand (briphos) and chiral sensors. In order to explain the unexpected electronic properties of briphos ligands, we have proposed a new concept, geometric control, to modulate the ligand property in addition to conventional steric and electronic control. With this phosphorus ligand developed by a new concept and our own synthetic tool, we have shown that the briphos ligand can be a tunable and scalable π–acceptor ligands for Rh-catalyzed conjugate additions of boronic acids and Pd-catalyzed dehydrative couplings of allylic alcohols. Moreover, we have developed new types of chirality sensors using stereodynamic axial chirality or cis-trans isomerism in the octahedral Co complexes. More recently, we have reported that negatively charged octahedral Al complexes can be conveniently used for 1H NMR chiral analysis of various charged molecules including amines and carboxylic acids.