On December 7, 2021, Chen, Peiran; Dai, Xueqi published an article.Reference of (2R,3S,4R)-2-(Acetoxymethyl)-3,4-dihydro-2H-pyran-3,4-diyl diacetate The title of the article was Site-specific synthesis of 3-Se-1,2-unsaturated glycosides with R-Se-Se-R as the nucleophile precursors promoted by InCl3/Hf(OTf)4. And the article contained the following:
By using Hf(OTf)4 as the catalyst, a series of 3-Se 1,2-unsaturated glucosides, e.g. I, have been synthesized site-specifically from tri-O-acetyl-D-glucal, 3,4-di-O-acetyl-L-rhamnal or 2,4,6-tri-O-benzyl-D-glucal with alkyl(aryl) hydroselenides as the nucleophile precursors in good yield. The experimental process involved the reaction of (2R,3S,4R)-2-(Acetoxymethyl)-3,4-dihydro-2H-pyran-3,4-diyl diacetate(cas: 2873-29-2).Reference of (2R,3S,4R)-2-(Acetoxymethyl)-3,4-dihydro-2H-pyran-3,4-diyl diacetate
The Article related to substitution catalyst selenoglycoside preparation hafnium triflate indium chloride catalyst, selenoglycoside preparation hafnium triflate indium chloride catalyst selenylation glycal and other aspects.Reference of (2R,3S,4R)-2-(Acetoxymethyl)-3,4-dihydro-2H-pyran-3,4-diyl diacetate
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