A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 2892-51-5, Name is 3,4-Dihydroxy-3-cyclobutene-1,2-dione, molecular formula is C4H2O4. In an article, author is Xiao, Yan,once mentioned of 2892-51-5, Application In Synthesis of 3,4-Dihydroxy-3-cyclobutene-1,2-dione.
Metal-free C-H mercaptalization of benzothiazoles and benzoxazoles using 1,3-propanedithiol as thiol source
A facile and effective C-H functionalization strategy for the synthesis of 2-mercaptobenzothiazoles and 2-mercaptobenzoxazoles is described. 1,3-Propanedithiol was employed to convert benzothiazoles and benzoxazoles to the corresponding heteroarylthiols in the presence of potassium hydroxide and DMSO. This novel protocol is featured by direct C-H mercaptalization of heteroarenes and a simple reaction system.
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Reference:
Benzoxazole – Wikipedia,
,Benzoxazole | C7H5NO – PubChem