Application 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.
The known compound 1,2,5-thiadiazole-3,4-dicarbonitrile, 1a preferentially forms mono addition compounds 3, but also bis-addition compounds 4 with oxygen, nitrogen and sulfur nucleophiles. One preparation of 1a produced bis<4-cyano-1,2,5-thiadiazol-3-ylmethyl(imino)>amine 2 as a minor product. The structure of compound 2, the facile formation of triazine 5 and the monocyclic structures of 3 and 4 indicate extensive stereoelectronic interactions between vicinal substituents of 1,2,5-thiadiazole. A bicyclic diimino imide was not formed from 1a in sulfur- or methoxide-catalysed reactions with ammonia in methanol.
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Reference：
Tetrahydropyran – Wikipedia,
Tetrahydropyran – an overview | ScienceDirect Topics