Archives for Chemistry Experiments of (2R,3S,4R,5R)-2,3,4,5-Tetrahydroxy-6-(((2S,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)tetrahydro-2H-pyran-2-yl)oxy)hexanal

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Synthetic Route of 499-40-1, Children learn through play, and they learn more than adults might expect. Science experiments are a great way to spark their curiosity, get their minds active, and encourage them to do something that doesn’t involve a screen. 499-40-1, C12H22O11. A document type is Article, introducing its new discovery.

Di(pyrid-2-yl)amine is monoprotonated by acetic, squaric as well as hydrochloric acid and diprotonated by trifluoromethylsulfonic acid. To explore the anion and hydrogen-bridge dependency of its salts, crystals of the monomeric tetraphenylborate, the dimeric squarate as well as the bis(trifluoromethylsulfonate) and the polymeric chloride hydrate have been grown and their structures determined: Separated by bulky tetraphenylborate anions, pyrid-2-yl(2?-pyridinium) amine cation contains an intramolecular hydrogen bridge N?H…N and is slightly folded. The squarate salt dimer exhibits additional bridges, N-H…O and O-H…O. The severely twisted di(2-pyridinium)amine dication is connected to its trifluormethylsulfonate counter unions by altogether three H-bridges, two N?H…O and one N-H…O. The chloride dihydrate crystallizes in layers of 16-membered rings, formed from three Cl anions and five water molecules. The diversity of the, hydrogen-bridge dominated salt structures is discussed based on comparison with selected literature examples and on PM3 calculations.

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Reference:
Tetrahydropyran – Wikipedia,
Tetrahydropyran – an overview | ScienceDirect Topics