Sentence Examples

  • Rhodizonic acid (dioxydiquinoyl), C 6 H 2 O 6, is probably the enolic form of an oxypentaketo-cyclo-hexane.
  • The thiophen homologues are best prepared by heating the 1.4 diketones with phosphorus pentasulphide, the diketones reacting in the enolic form: Thiotenol, or oxymethyl thiophene, is prepared by heating laevulinic acid with phosphorus pentasulphide (W.