Bis(trifluoroacetyl)phenols and their derivatives in reactions with selected phosphorus(III) compounds

Abstract

The reactivity of bis(trifluoroacetyl)-phenols toward selected

Lanthanide‐Catalyzed Selective Addition of Diethyl Phosphite to Chalcones

“…To our knowledge, 2‐oxido ‐ 1,2‐oxaphospholanes displays potential biological activity . The preparation of these P(V)‐heterocyclic molecules has already attracted considerable attention , but complex and inaccessible substrates were used in most approaches. Limited literature described the synthesis of (2‐oxido‐1,2‐oxaphospholan‐5‐yl)phosphonates, which can be used as flame retardants in epoxy resins, via the reaction of dialkyl phosphites with vinyl ketones or aldehydes in the presence of sodium and the yields were not satisfactory .…”

Chemistry of pentacoordinated anti-apicophilic phosphorus compounds

“…A common feature for these two classes of compounds is that both compounds have three oxygen atoms at the equatorial positions and such a trend was also observed when one of three oxygen atoms is replaced by nitrogen atom. The apical coupling constants of 14a,b was 125 Hz [19]. These results indicated that the extraordinarily large apical coupling constants should be derived from the perfectly anti-apicophilic arrangement, in which all equatorial positions are occupied with electronegative atoms such as oxygen and nitrogen atom.…”

“…Spirophosphoranes 11a-c, carbaphosphatranes [18][19][20]22, and phosphoranes 14a-c reported by Rö schenthaler also take an ideal trigonal bipyramidal structure [16,17,19,[21][22][23].…”

“…Rö schenthaler succeeded in synthesizing phosphoranes 14a-c by the reaction of the phenol derivative bearing two trifluoroacetyl groups at the ortho position with dialkyl(isocyanato)phosphite (Scheme 12) [19].…”