ChemInform Abstract: SYNTHESIS AND STRUCTURE OF PRODUCTS OF THE ALKYLATION OF PHOSPHORUS DIIODIDE BY ALKYL IODIDES

Abstract

Alle in dieser Arbeit beschriebenen Synthesen werden in einer Inertgasat ‐ mosphäre sowie wasserfreien und Sauerstoff‐freien Lösungsmitteln durchgeführt.

catena‐Phosphorus Cations

“…The PP‐bonded diphosphonium unit J was first assigned on the basis of elemental analysis data and IR spectroscopy62 for products isolated from reactions of red phosphorus with alkyl iodides 63. 64 Examples of the diphosphonium unit were definitively characterized in unique polycyclic frameworks ( J‐1 ,18 J‐2 ,22 and J‐3 [26] ) and in the presence of sterically bulky amine substituents ( J‐4 a 19).…”

Prototypical Phosphorus Analogues of Ethane: General and Versatile Synthetic Approaches to Hexaalkylated P−P Diphosphonium Cations

“…The fundamentally important parent or benchmark P−P bonded diphosphonium unit is present in a few structurally characterized compounds that involve sterically bulky amine substituents ( 1 14 ) or a polycyclic framework ( 2 , 3 , and 4 17 ). Nevertheless, hexaalkyldiphosphonium triiodide salts are speculated as the products of reactions of red phosphorus with alkyl iodides or from trialkylphosphines with iodine, , and [Me 3 PPMe 3 ][PF 6 ] 2 has been assigned on the basis of elemental analysis data and IR spectroscopy . We have now discovered that alkylation reactions of diphosphines or phosphinophosphonium cations provide a versatile approach to hexaalkyl-1,2-diphosphonium dications, representing prototypical phosphorus analogues of ethane.…”