Contents Introduction ----------------------------------------------------------------- 1 References ------------------------------------------------------------------- 7 Chapter 1. Development of a Novel Type of Chiral Phosphine Ligands, and Asymmetric Reactions Using Their Transition Metal Complexes -------------------------------------------------------- 9 References ------------------------------------------------------------------ 55 Chapter 2. New Synthesis of Cyclobutane Annelated Compounds by the Use of a (1-Cyclobutenyl) triphenylphosphonium Salt ------------- 58 References ------------------------------------------------------------------ 72 Chapter 3. Synthesis of Reactions of (2-Oxocyclobutyl) diphenylphosphine Oxide ----------------------------------------------------------- 74 References ------------------------------------------------------------------ 87 Chapter 4. [Cycloalkyl (phenylseleno) methylene] triphenylphosphoranes: Synthesis and Reactions of (Phenylseleno) alkenes --------------- 88 References ------------------------------------------------------------------ 99 Summary -------------------------------------------------------------------- 100 Acknowledgement ------------------------------------------------------------ 102