Name: 5-Methylfuran-2(3H)-one. The protonation of heteroatoms in aromatic heterocycles can be divided into two categories: lone pairs of electrons are in the aromatic ring conjugated system; and lone pairs of electrons do not participate. Compound: 5-Methylfuran-2(3H)-one, is researched, Molecular C5H6O2, CAS is 591-12-8, about Butenolide Derivatives of Biobased Furans: Sustainable Synthetic Dyes. Author is Saska, Jan; Li, Zheng; Otsuki, Andrew L.; Wei, Jiahui; Fettinger, James C.; Mascal, Mark.
The dye and pigment manufacturing industry is one of the most polluting in the world. Each year, over one million tons of petrochem. colorants are produced globally, the synthesis of which generates a large amount of waste. Naturally occurring, plant-based dyes, on the other hand, are resource intensive to produce (land, water, energy), and are generally less effective as colorants. Between these two extremes would be synthetic dyes that are fully sourced from biomass-derived intermediates. The present work describes the synthesis of such compounds, containing strong chromophores that lead to bright colors in the yellow to red region of the visible spectrum. The study was originally motivated by an early report of an unidentified halomethylfurfural derivative which resulted from hydrolysis in the presence of barium carbonate, now characterized as a butenolide of 5-(hydroxymethyl)furfural (HMF). The method has been generalized for the synthesis of dyes from other biobased platform mols., and a mechanism is proposed.
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Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia