Ueber die Einwirkung von Phosphortrichlorid auf Salicylsäure und auf Phenol

Low-Temperature Deacylation of N-Monosubstituted Amides

“…The complex is stable enough at this temperature to allow convenient and general application in organic synthesis. However, despite several efforts aiming to clarify the nature of these dihalotriphenoxyphosphoranes, the exact nature of such compounds remains, at present, uncertain . As part of our ongoing research on the synthesis of new dual-action cephalosporins as β-lactamase inhibitors, we applied the new reagent to a phenoxyacetamido cephalosporin (cephalosporin V) derivative as shown in Scheme .…”

Diphenyl 2-(α,α,4-trichlorobenzyl)phenyl phosphate

“…,,4-Trichloro--phenyl-o-tolyl dichlorophosphinate, (1), was formed by loss of HCl from the reaction of 4-chlorophenyl 2hydroxybenzophenone and phosphorus pentachloride (Pinkus et al, 2004). This is in contrast to the PhOPCl 4 type of product expected from the reactions of phenols and phosphorus pentachloride (Anschu È tz & Emery, 1887, 1889. The further reaction of (1) with phenol was carried out to obtain the compound shown as structure (2).…”