Cauwenbergh, Thibault published the artcileContinuous Flow Synthesis of Sulfur- and Selenium-NHC Compounds (NHC=N-Heterocyclic Carbene), Recommanded Product: 1,3-Bis(2,6-diisopropylphenyl)-4,5-dihydro-1H-imidazol-3-ium chloride, the publication is European Journal of Organic Chemistry (2022), 2022(15), e202101296, database is CAplus.
The first continuous flow syntheses of sulfur- and selenium-NHC (NHC=N-heterocyclic carbene) adducts in unprecedented short reaction times and high yields are reported. The importance of these species in coordination chem. or as efficient tools for determining the π-acceptor character of NHC ligands make any improvement in their synthesis a worthy goal. Thiourea derivatives bearing both saturated and unsaturated NHCs were obtained using NEt3 as a weak base (homogeneous setup) in conjunction with a bed of elemental sulfur (S8). The synthetic route proving optimal for selenoureas involves the use of a simple Se/K2CO3 heterogeneous microreactor design.
European Journal of Organic Chemistry published new progress about 258278-25-0. 258278-25-0 belongs to imidazoles-derivatives, auxiliary class Achiral NHCs Ligands, name is 1,3-Bis(2,6-diisopropylphenyl)-4,5-dihydro-1H-imidazol-3-ium chloride, and the molecular formula is C27H39ClN2, Recommanded Product: 1,3-Bis(2,6-diisopropylphenyl)-4,5-dihydro-1H-imidazol-3-ium chloride.
Referemce:
https://en.wikipedia.org/wiki/Imidazole,
Imidazole | C3H4N2 – PubChem