Dithiocarbamate Synthesis and Applications

Dithiocarbamates represent a versatile class of sulfur-containing ligands characterised by the general formula R2N–CS2–. They are most commonly prepared by the reaction of primary or secondary amines with carbon disulfide under basic conditions, often in a one-pot procedure that affords the corresponding dithiocarbamate salt. Variations on this classical approach include multicomponent reactions involving isocyanides or alkyl halides, sustainable processes utilising elemental sulfur, and metal-promoted cross-coupling strategies. These synthetic advances have improved atom economy, broadened substrate scope and enabled catalyst-free protocols under mild, aqueous or solvent-free conditions. Applications of dithiocarbamates span diverse fields. In agriculture, they serve as fungicides and crop protectants. In material science, they function as vulcanisation accelerators in rubber processing and as stabilisers in polymer blends. In medicinal chemistry, they act as enzyme inhibitors or prodrugs, exploiting their ability to form reversible metal complexes. In environmental chemistry, dithiocarbamates chelate heavy metals, facilitating wastewater treatment and soil remediation. Moreover, they are valuable intermediates for the synthesis of isothiocyanates, thiazoles and other heterocycles via desulfurisation or cyclisation reactions. Collectively, these applications underscore the global significance of dithiocarbamate chemistry in sustainable synthesis, industrial processes and therapeutic development.

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Dithiocarbamate Synthesis and Applications publication trend

The graph below shows the total number of articles in dithiocarbamate synthesis and applications across all publications each year (not limited to Nature Index journals).

Technical terms

Dithiocarbamate: An anionic ligand (R2N–CS2–) formed by reaction of amines with carbon disulfide, widely used in chelation and as an intermediate in heterocycle synthesis.

Multicomponent reaction: A one-pot process combining three or more reactants to form a product incorporating substantial portions of each starting material.

Isothiocyanate: A functional group (R–N=C=S) often generated from dithiocarbamate precursors and used as electrophilic building blocks in organic synthesis.

Chelation: The process by which a ligand binds to a metal ion through two or more donor atoms, forming a stable complex.

References

1. A novel three-component reaction between isocyanides, alcohols or thiols and elemental sulfur: a mild, catalyst-free approach towards O-thiocarbamates and dithiocarbamates. Beilstein Journal of Organic Chemistry (2019).
2. Copper-Promoted Hiyama Cross-Coupling of Arylsilanes With Thiuram Reagents: A Facile Synthesis of Aryl Dithiocarbamates. Frontiers in Chemistry (2022).
3. Synthesis of Dithiocarbamates by Markovnikov Addition Reaction in PEG and Their Application in Amidoalkylation of Naphthols and Indoles. Journal of the Brazilian Chemical Society (2015).
4. Amino Acid‐Based Dithiocarbamates as Efficient Intermediates for Diversity‐Oriented Synthesis of Thiazoles. European Journal of Organic Chemistry (2020).