We have successfully
developed a green and efficient multicomponent
reaction protocol to synthesize S-aryl dithiocarbamates
under visible light. Most appealingly, the reaction can proceed smoothly
without adding any transition-metal catalysts, ligands, or photocatalysts
while minimizing chemical wastes and metal residues in the end products.
The advantages of this method meet the requirements of sustainable
and green synthetic chemistry, and it provides a straightforward way
to create valuable S-aryl dithiocarbamates.
In
the present study, we describe the successful development of
a novel and efficient C(sp2)–H thiocyanation reaction
of electron-rich heteroarenes and arenes with readily available ammonium
thiocyanate under visible light exposure. Most importantly, the reaction
proceeded smoothly without addition of any photocatalyst or strong
oxidant, ultimately minimizing the production of chemical waste. The
advantages of this reaction met the requirements of green and sustainable
synthetic chemistry and may be widely used in organic synthesis and
pharmaceutical chemistry.
An efficient visible-light-assisted,
copper-catalyzed sulfonylation
of aryl halides with sulfinates is reported. In our protocol, a single
ligand CuI photocatalyst formed in situ was used in the
photocatalytic transformation. Diverse organosulfones were obtained
in moderate to good yields. This strategy demonstrates a promising
approach toward the synthesis of diverse and useful organosulfones.
In this paper, we describe the successful development of an efficient domino method for the synthesis of C-3 sulfenylated imidazo[1,2-a]pyridine derivatives applying carbon disulfide as a readily available, cheap and easy-to-handle building block. Most importantly, a single copper catalyst mediates two type reactions and three chemical bonds are formed in a one-pot organic transformation. The developed method provids an attractive alternative approach to various potentially bioactive sulfur-containing heterocycles, and will find broad applicability in organic synthesis and pharmaceutical chemistry.
A green and efficient visible-light promoted oxidative desulphurisation protocol has been proposed for the construction of unsymmetrical ureas under mild conditions with broad substrate scope and good functional group tolerance.
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