Some chemical data on cyperus papyrus L. the ancient paper making material

Papyrus can indeed be considered as a plant that touched the Egyptian civilization at many points. It is of interest that [Papyrus Paper] is still being made for sale to tourists. Most of the studies made on various species of papyrus have been concerned with the pulping operations in order to find their potential as a paper making material. Various types of pulping have been reported the most satisfactory of which was that using sodium hydroxide. However, the yield from such alkaline pulping was rather low. Recently, it was found that the paper made from Papyrus without treatment with fire retardants has better fireproofing than other papers. On the other hand, its treatments with fire retardants did not significantly improve its flammability properties. Consequently, it was suggested that Papyrus has an inherent flame-retardant effect. A systematic study of the constituents and chemistry of the various species of Papyrus are rather few. The presence of D-fructose and D-glucose was reported in the hot water extract of the parenchymatous tissue of Cyperus papyrus, together with xylose and small amounts of glucosan from the products of hydrolysis of the same tissue after water extraction. Although, an analytical study of the rind and pith of the Papyrus has been reported it was found later that the study has been undertaken on another plant. Consequently, it is of interest to do such a study on the pith and rind of Egyptian Papyrus [Cyperus papyrus L.]

Pyrazolylquinoxaline derivatives from 3- [1- [phenyl-hydrazono] -l-threo-2,3,4-trihydroxyboutyl] -1H quinoxalin-2-one

Attempted benzylation of 3-[1-[phenylhydrazono]-L- threo-2,3,4-trihydroxybutyl]-1H-quinoxalin-2-one [I] gave 1-benzyl-3 [5-[hydroxymethyl]-1-phenylpyrazol-3-yl] quinoxalin- 2-one [II]. When III was subjected to the Vilsmeier-type reaction condition, no carbaldehyde derivative could be obtained but the product was 2-chloro-3-[5-[chloromethyl]-1-phenylpyrazol-3- yl] quinoxaline [V]. The acetyl derivative VI gave, under the same condition, 3-[5-[acetoxymethyl]-1-phenylpyrazol-3-yl]-2- chloroquinoxaline [VII]