Ichiro Shima

Thermal reactions of (2,4,6-tri-butylphenyl)phosphonous dichloride and its derivatives; formation of 2,3-dihydro-1h-phosphinodes

Abstract 2,3-Dihydro-1H-phosphindole derivatives were obtained from thermal reactions of (2,4,6-tri-tert-butylphenyl)phosphonous dichloride in refluxing toluene, probably through cyclization involving phosphorus radicals with an adjacent methyl of o-tert-butyl groups.

Ab initio calculation of boat benzenes in bis(2,4,6-tri-t-butylphenyl) phosphinic chloride

Abstract ab initio Calculation of the benzene skeletons of the titled compound indicated that the molecule suffers 61.4 kcal/mol higher energy than that of flat benzene rings and that the boat benzene form is even more stable than the envelope or chair form benzene.

Reaction of a diphosphene with various halogens

Abstract Bis(2,4,6-tri- tert -butylphenyl) diphosphene reacts with various halogens to give the corresponding phosphoric dihalides, haloarene, and arene depending upon the halogen and solvent used.

Some reactions of diphosphenes and related species

Abstract Some reactions of diphosphenes and the related species involving oxidation, reduction, alkylation, sulfurization, and 6η-coordination are described.

Oxidation of a diphosphene and dechlorination of an arylphosphonic dichloride: isolation of the diphosphene oxide

The dechlorination reaction of the phosphonic dichloride ArP(O)Cl2(Ar = 2,4,6-Bu2tC6H2) with magnesium gave the sterically protected diphosphene oxide ArP(O)= PAr as a stable compound.

ESCA studies of a diphosphene

Abstract The nature of the P[dbnd]P bond in E-bis(2,4,6-tri-tert-butylphenyl)diphosphene was studied by means of ESCA, indicating that the phosphorus 2p binding energy is the lowest among those for common organophosphorus compounds.