The flat faces of aromatic rings also have partial negative charges due to the π-electrons. Similar to other non-covalent interactions –including hydrogen bonds, electrostatic interactions and Van der Waals interactions. 7143-01-3, Name is Methanesulfonic anhydride, molecular formula is C2H6O5S2, Application of 7143-01-3.
A silver(i)-catalyzed cascade bicyclization strategy for synthesis of 5H-benzo[d]tetrazolo[5,1-b][1,3]thiazines
A simple and efficient protocol for silver(I)-catalyzed tandem reaction of o-alkynylphenyl isothiocyanates with sodium azide has been developed, affording a series of 5H-benzo[d]tetrazolo[5,1-b][1,3]thiazines in moderate to good yields. In this transformation, a [3 + 2] cycloaddition reaction mechanism was involved and two new rings were formed in one pot.
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Reference:
Thiazine – an overview | ScienceDirect Topics,
,Thiazine | C4H5NS – PubChem