No abstract

A new AB2 type bio-based monomer (FDA-E) with two amino functional groups and one ester functional group was prepared from renewable levulinic acid and furfurylamine using a three-step reaction.

A new, efficient copper-catalyzed C(sp2)–S formation of phenyl dithiocarbamates starting from aryl iodides and tetramethylthiuram monosulfide (TMTM) was developed. The target compounds, phenyl dithiocarbamates with active sites, were synthesized smoothly in good to excellent yields. The easy performance, high yields, decent functional group compatibility, and cost-effective substrates make the protocol practical and attractive in C–S bond formation.

An iodine-catalyzed one-pot synthesis of thioenamines and chromones is reported. By using easily available phenyl isothiocyanate, alcohols, and enamines as starting materials, a tandem reaction (nucleophilic addition and the subsequent crossdehydrogenation coupling) proceeded smoothly to give the desired thioenamines in good to excellent yields. This protocol features simple operation, mild conditions, a broad substrate scope, good atomic economics, and no need to add extra reaction solvents, providing a practical and green route for the synthesis of thioenamines. In addition, this method can also prepare some representative chromones in moderate yields.

An efficient and practical construction of S−N bond from aryl thioureas and amines under mild and metal‐free conditions is reported. A series of sulfenamides was obtained smoothly from aryl thioureas and amines (mainly secondary amines) through cross dehydrogenation coupling reaction (CDC) in the presence of phenyliodine(III) diacetate. The protocol features easily available starting materials, easy and odorless performance, mild reaction conditions, good yields, and a broad substrate scope, illustrating its synthetic value for the synthesis of diverse biologically or pharmaceutically relevant compounds.