Abstract
Several sterically protected, low-coordinate organophosphorus compounds with P=P, P=C, and C≡P bond are described in this study. Molecules such as diphosphenes, phosphaalkenes, 1-phosphaallenes, 1,3-diphosphaallenes, 3,4-diphosphinidenecyclobutenes, and phosphaalkynes are stabilized with an extremely bulky 2,4,6-tri-t-butylphenyl (Mes*) group. The synthesis, structures, physical, and chemical properties of these molecules are discussed, together with some successful applications in catalytic organic reactions.
Highlights
Low-coordinate organophosphorus compounds with coordination numbers of 1 or 2 compounds with coordination numbers of 1 or 2
By introducing a sterically bulky group such as 2,4,6-tri-t-butylphenyl into a molecule, various kinds of unusual bulky group such as 2,4,6-tri-t-butylphenyl into a molecule, various kinds of unusual phosphorus compounds have been isolated as kinetically stable species since 1981
In this phosphorus compounds have been isolated as kinetically stable species since 1981
Summary
By introducing a sterically were once believed to only exist as unstable species. By introducing a sterically bulky group such as 2,4,6-tri-t-butylphenyl into a molecule, various kinds of unusual bulky group such as 2,4,6-tri-t-butylphenyl into a molecule, various kinds of unusual phosphorus compounds have been isolated as kinetically stable species since 1981. In this phosphorus compounds have been isolated as kinetically stable species since 1981. Including the preparation, structural, physical, theoretical and chemical aspects, as well including the preparation, structural, physical, theoretical and chemical aspects, as well as as some catalytic applications to organic reactions—are described.
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