127409-51-2Relevant academic research and scientific papers
CATIONIC RING OPENING OF FUNCTIONALIZED DIPHOSPHIRANES:
Gouygou, M.,Tachon, C.,Etemad-Moghadam, G.,Koenig, M.
, p. 7411 - 7414 (1989)
The functionalized diphosphiranes 1a-c, in presence of Lewis acid, undergo two kinds of reaction:the ring opening leading to the phosphenium-phosphonium ion 2a-c obtained according to an electrocyclic reaction and the fragmentation giving phosphaalkene 3a
Photochemistry of Functionalized Diphosphiranes
Gouygou, Maryse,Tachon, Christine,Koenig, Max,Dubourg, Antoine,Declercq, Jean-Paul,et al.
, p. 5750 - 5756 (2007/10/02)
The structure of the functionalized trans-diphosphiranes 1a-e, obtained by reaction of halogenocarbenes with the trans-diphosphene is confirmed by X-ray diffraction.The photolysis of 1a-e lead to the functionalized cis- and trans-1,3-diphosphapropenes 2a-e as major products, via the diphosphiranyl 7 and the diphosphapropenyl 8 radical intermediates.The latter are characterized by ESR spectroscopy using the spin-trap method.The trans configuration of 2a is also confirmed by X-ray diffraction.The mechanism of the ring-opening, involving P-P bond rupture, is discussed.
