Six novel lactamomethyl derivatives of 2,5-dimethylphenol and 2,3,5-trimethylphenol were prepared with moderate yields by the reaction corresponding phenols 1-(hydroxymethyl)lactams in presence an acid catalyst. In all cases, substitution occurred at position 4 to phenolic hydroxyl group. The structures synthesized compounds confirmed FT-IR, 1 H 13 C NMR, 2D NMR elemental analysis. selectivity ...

The chemical analysis and quality control of Ginkgo leaves and extracts is reviewed. Important constituents present in the medicinally used leaves are the terpene trilactones, i.e., ginkgolides A, B, C, J and bilobalide, many flavonol glycosides, biflavones, proanthocyanidins, alkylphenols, simple phenolic acids, 6-hydroxykynurenic acid, 4-O-methylpyridoxine and polyprenols. In the commercially...

This research aimed to examine the upgrading of sisal residue bio-oil from relations between process conditions fast pyrolysis and properties fluid. The was produced in a pilot unit with fluidized bed reactor by varying nitrogen flow rate, biomass mass flow, temperature, pressure. Overall, composition intensely dependent on parameters. pressure at lowest value best condition for obtaining high ...