104230-74-2Relevant academic research and scientific papers
Synthesis and Structure of 2,4-Bis(2,6-di-tert-butyl-4-methylphenoxy)-1,3,2,4-dioxadiphosphetane. An Aryl Phosphenite Dimer
Chasar, Dwight W.,Fackler, John P.,Komoroski, Richard A.,Kroenke, William J.,Mazany, Anthony M.
, p. 5690 - 5693 (1987)
When 2,4,6-tris(2,6-di-tert-butyl-4-methylphenoxy)-1,3,5,2,4,6-trioxatriphosphorinane (1a) is sublimed at 220 deg C under vacuum, a new heterocycle, a 1,3,2,4-dioxadiphosphetane (3), is formed.This molecule can be considered a dimer of the aryl phosphenit
Thermal Retro-Trimerization of Some 1,3,5,2,4,6-Trioxatriphosphorinanes to Phosphenites
Quin, Louis D.,Ionkin, Alexey S.
, p. 5186 - 5189 (2007/10/02)
Pyrolysis in a packed tube of the vapor from three 2,4,6-tris(aryloxy)-1,3,5,2,4,6-trioxatriphosphorinanes was performed at 300-350 deg C and 1E-6 mm; the product was collected on a cold finger chilled by liquid nitrogen.The cracking of the trimer was complete, and the product at -195 deg C appeared to consist only of the monomeric aryl phosphenite, ArOP=O.On warming, dimerization occured, later followed by trimer formation.The weak 31P NMR signal for the phosphenite (about δ 238 for three O-aryl derivatives) persisted in the solution for several weeks if water was rigorously excluded.Treatment of the phosphenite with water or alcohols at -195 deg C gave a mixture of products; the major product (ArO-PH(O)OH) came from addition of the nucleophile to the P=O bond, but significant amounts (10-20percent) of dialkyl H-phosphonates (HP(O)(OR)2) were present, apparently from displacement of the O-aryl substituent of the phosphenite, followed by addition to the double bond.
2,4-bis-(2,6-di-t-alkyl-4-substituted-phenoxy)-1,3,2,4-dioxadiphosphetanes
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, (2008/06/13)
2,4-bis(2,6-di-t-alkyl-4-substituted-phenoxy)-1,3,2,4-dioxadiphosphetanes are prepared from 2,4,6-tris(substituted phenoxy)-1,3,5,2,4,6-trioxatriphosphorinanes.
