Research speed reading in 2021. As an important bridge between the micro and macro material world, chemistry is one of the main methods and means for humans to understand and transform the material world.. , Formula: https://www.ambeed.com/products/6192-52-5.html, 6192-52-5, Name is 4-Methylbenzenesulfonic acid hydrate, molecular formula is C7H10O4S, belongs to thiazines compound. In a document, author is Liao, Sheng-Rong, introduce the new discover.
Ring-contraction from benzo[b][1,4]thiazines to benzo[d]thiazolines induced by oxygen
An unexpected ring-contraction from benzo[b]pyrazino[1,2-d][1,4]thiazine-1,4-diones (6) to benzo[4,5] thiazolo[3,2-a]pyrazine-1,4-diones (7) has been developed. The preliminary mechanistic studies showed the transformation contained two independent steps: the first step is the formation of a Michael adduct upon the addition of the protic solvent, in the presence of base, to the C-2-C-3 double bond of compound 6, and the second step is a ring-contraction induced by oxygen via the migration of sulfur atom from C-2 to C-3 position. And its scope is also studied. (C) 2016 Elsevier Ltd. All rights reserved.
But sometimes, even after several years of basic chemistry education, it is not easy to form a clear picture on how they govern reactivity! 6192-52-5, you can contact me at any time and look forward to more communication. Formula: https://www.ambeed.com/products/6192-52-5.html.
Reference:
Thiazine – an overview | ScienceDirect Topics,
,Thiazine | C4H5NS – PubChem