Kazumasa Kajiyama

First Characterization of a 10-P-5 Spirophosphorane with an Apical Carbon−Equatorial Oxygen Ring. Kinetic Studies on Pseudorotation of Stereoisomers

Satoshi Kojima, Kazumasa Kajiyama, Masaaki Nakamoto et al. · Journal of the American Chemical Society · 1996 · 70 citations

Natural Sciences, Chemistry, Bioisosterism +4

Characteristic Reactions and Properties of <i>C</i>-Apical <i>O</i>-Equatorial (<i>O-cis</i>) Spirophosphoranes:  Effect of the σ*_P_-_O Orbital in the Equatorial Plane and Isolation of a Hexacoordinate Oxaphosphetane as an Intermediate of the Wittig Type Reaction of 10-P-5 Phosphoranes

Shiro Matsukawa, Satoshi Kojima, Kazumasa Kajiyama et al. · Journal of the American Chemical Society · 2002 · 67 citations

Natural Sciences, Chemistry, Inorganic Chemistry +11

A Method for Determining the Difference in Relative Apicophilicity of Carbon‐Containing Substituents of 10‐P‐5 Phosphoranes

Shiro Matsukawa, Kazumasa Kajiyama, Satoshi Kojima et al. · Angewandte Chemie International Edition · 2002 · 62 citations

Natural Sciences, Biochemistry, Chemistry +7

Highly Selective One-Pot Synthesis of Spirophosphoranes Exhibiting Reversed Apicophilicity by Oxidation of Dianions Generated from P−H Spirophosphorane

Kazumasa Kajiyama, Miki Yoshimune, Masaaki Nakamoto et al. · Organic Letters · 2001 · 52 citations

Natural Sciences, Chemistry, Medicinal Chemistry +10

Characterization of Enantiomeric Pairs of Optically Active 10-P-5 Phosphoranes with Asymmetry Only at Phosphorus

Satoshi Kojima, Kazumasa Kajiyama, Kin‐ya Akiba · Bulletin of the Chemical Society of Japan · 1995 · 45 citations

Natural Sciences, Chemistry, Inorganic Chemistry +5