(2S,3R,4S,5S,6R)-6-(Hydroxymethyl)tetrahydro-2H-pyran-2,3,4,5-tetraol hydrate (cas: 14431-43-7) belongs to tetrahydropyran derivatives. Tetrahydropyran is an important raw material and intermediate used in Organic Synthesis, Pharmaceuticals, Agrochemicals and dyestuff. 2-(Arylmethylene)cyclopropylcarbinols could be converted to the corresponding tetrahydropyrans stereoselectively in the presence of Brønsted acids under mild conditions. A plausible Prins-type reaction mechanism has been proposed.Name: (2S,3R,4S,5S,6R)-6-(Hydroxymethyl)tetrahydro-2H-pyran-2,3,4,5-tetraol hydrate
Identification of crystallized dextrose and mutual transitions between its monohydrate and anhydrate was written by Ishibashi, Hiroshi;Morio, Hiroshi;Fuchi, Katoshi;Mizuki, Katsumi. And the article was included in Kanzei Chuo Bunsekishoho in 1997.Name: (2S,3R,4S,5S,6R)-6-(Hydroxymethyl)tetrahydro-2H-pyran-2,3,4,5-tetraol hydrate This article mentions the following:
FT-IR and X-ray diffraction anal. were carried out for dextrose monohydrate and its anhydrate to distinct between its monohydrate and anhydrate. In IR spectrum, it is different from dextrose monohydrate and its anhydrate on bands at 1100 to 1050 cm-1 and at 700 to 500 cm-1. X-ray diffraction patterns of dextrose monohydrate and its anhydrate differ in diffraction angles and intensities. From these results, its was found that FT-IR and X-ray diffraction method was useful for distinction between dextrose monohydrate and its anhydrate. Thermogravimetric DTA (TG-DTA) was performed for crystallized dextrose. It is to be expected that dextrose monohydrate was easily transferred into its anhydrate by heating, which temperature is lower than the m.p. of its monohydrate. TG-DTA curves of dextrose anhydrate which hydrated with 9.1% moisture was similar to that of dextrose monohydrate. It is indicated that dextrose anhydrate was converted into its monohydrate with addition moisture. Dextrose anhydrate was also transformed its monohydrate at room temperature in an atm. saturated with moisture. X-ray diffraction patterns of prepared monohydrate, however, differ from com. one in diffraction intensity. It is expected that we would be able to distinct com. monohydrate from prepared monohydrate which transformed from dextrose anhydrate. In the experiment, the researchers used many compounds, for example, (2S,3R,4S,5S,6R)-6-(Hydroxymethyl)tetrahydro-2H-pyran-2,3,4,5-tetraol hydrate (cas: 14431-43-7Name: (2S,3R,4S,5S,6R)-6-(Hydroxymethyl)tetrahydro-2H-pyran-2,3,4,5-tetraol hydrate).
(2S,3R,4S,5S,6R)-6-(Hydroxymethyl)tetrahydro-2H-pyran-2,3,4,5-tetraol hydrate (cas: 14431-43-7) belongs to tetrahydropyran derivatives. Tetrahydropyran is an important raw material and intermediate used in Organic Synthesis, Pharmaceuticals, Agrochemicals and dyestuff. 2-(Arylmethylene)cyclopropylcarbinols could be converted to the corresponding tetrahydropyrans stereoselectively in the presence of Brønsted acids under mild conditions. A plausible Prins-type reaction mechanism has been proposed.Name: (2S,3R,4S,5S,6R)-6-(Hydroxymethyl)tetrahydro-2H-pyran-2,3,4,5-tetraol hydrate
Referemce:
Tetrahydropyran – Wikipedia,
Tetrahydropyran – an overview | ScienceDirect Topics