In heterogeneous catalysis, the catalyst is in a different phase from the reactants. At least one of the reactants interacts with the solid surface in a physical process called adsorption in such a way. In an article, once mentioned the application of 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, is a conventional compound. this article was the specific content is as follows.Reference of 499-40-1
By reaction of [N(C4H9)4]2[B10H 10] with 2, 2′-(C5H5N)2NH at 160C the 2-[2-(2-pyridyl-amino)-pyrid-5-yl]-closo-decaborate anion [2-{2-(2-(C5H4N)-NH)-(C5H 3N)-5}B10H9]2- is obtained which can be separated from excess [B10H10]2- by ion exchange chromatography on diethylaminoethyl(DEAE) cellulose. The crystal structure of [P(C6H5)4]2[2-{2-(2-(C5H 4N)-NH)-(C5H3N)-5}B10H9] has been determinated by single crystal X-ray diffraction analysis: monoclinic, space group P21/n with a = 11.435(3), b = 22.923(2), c = 20.094(4) A, beta = 95,27(2), Z = 4. By influence of the substituent the B10 cage is strongly distorted with B-B distances ranging from 1.522 to 2.188 A. The 11B NMR spectrum reveals the feature (2:1:7) of a B10 cage with the substituent in the 2 position with a downfield shift of the ipso B atom at -20.2 ppm. The IR and Raman spectra exhibit characteristic BH stretching vibrations between 2416 and 2499 cm-1 and the (C-C) and (C-N) stretching vibrations in the range of 1306 to 1584 cm-1.
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Reference：
Tetrahydropyran – Wikipedia,
Tetrahydropyran – an overview | ScienceDirect Topics