Production of furan compounds from Cryptomeria japonica using pyridinium chloride under various conditions was written by Yoshioka, Koichi;Yamada, Tatsuhiko;Ohno, Hiroyuki;Miyafuji, Hisashi. And the article was included in BioResources in 2018.Formula: C5H6ClN This article mentions the following:
Cryptomeria japonica was treated with pyridinium chloride ([Py]Cl)-water mixtures under various conditions to determine the optimum conditions for efficient production of furan compounds, such as 2-hydroxyacetylfuran (2- HAF), 5-hydroxymethylfurfural (5-HMF), and furfural. The maximum total yield of furan compounds, i.e., 9.24 weight%, was obtained by the treatment of C. japonica with a 90% [Py]Cl and 10% water (weight/weight) solution for 30 min at 120 °C with a sample loading of 6 weight%. The highest yield of 2-HAF from C. japonica was obtained by treatment for 3 min at 160 °C without the addition of water, although the total yield of furan compounds was lower than that obtained under the optimum treatment conditions. Scale-up of this process for efficient production of furan compounds from C. japonica was successfully performed under the optimum treatment conditions. In addition, the yields of 2-HAF and 5-HMF increased when ball-milled C. japonica containing low-crystallinity cellulose was treated under the optimum conditions. In the experiment, the researchers used many compounds, for example, Pyridinehydrochloride (cas: 628-13-7Formula: C5H6ClN).
Pyridinehydrochloride (cas: 628-13-7) belongs to pyridine derivatives. The ring atoms in the pyridine molecule are sp2-hybridized. The nitrogen is involved in the π-bonding aromatic system using its unhybridized p orbital. The lone pair is in an sp2 orbital, projecting outward from the ring in the same plane as the σ bonds. Reduced pyridines, namely tetrahydropyridines, dihydropyridines and piperidines, are found in numerous natural and synthetic compounds. The synthesis and reactivity of these compounds have often been driven by the fact many of these compounds have interesting and unique pharmacological properties. Formula: C5H6ClN