Electric Literature of 499-40-1, Because a catalyst decreases the height of the energy barrier, its presence increases the reaction rates of both the forward and the reverse reactions by the same amount. 499-40-1, Name is (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, molecular formula is C12H22O11. In a patent, introducing its new discovery.
Reactions between Hdpa (2,2?-dipyridylamine) and either RuCl 3 · xH2O and Ru2(OAc)4Cl produce mono-, di-, and tri-ruthenium complexes under various conditions. The ligand Hdpa and RuCl3 · xH2O react in boiling DMF to form the ionic species [Ru(Hdpa)2Cl2]Cl (1). Reaction of Ru2(OAc)4Cl with molten Hdpa leads to scission of the Ru-Ru bond and formation of the vertex-sharing bioctahedral complex Ru 2(dpa)3(OAc)0.64Cl1.36 (2). A mixture of both of these species results from the reaction of Ru 2(OAc)4Cl with Hdpa and LiCl in refluxing o-dichlorobenzene/EtOH mixtures. This mixture of compounds reacts further with KOBut and n-butanol in refluxing naphthalene to give low yields of the extended metal atom chain (EMAC) complex Ru3(dpa) 4Cl2 (I).
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Reference：
Tetrahydropyran – Wikipedia,
Tetrahydropyran – an overview | ScienceDirect Topics