Kang, Byungjoon published the artcilePhotoredox mediated nickel catalyzed C(sp3)-H thiocarbonylation of ethers, HPLC of Formula: 258278-25-0, the publication is Chemical Science (2017), 8(9), 6613-6618, database is CAplus and MEDLINE.
The first direct C(sp3)-H thiocarbonylation reaction is achieved by visible light photoredox/Ni dual catalysis. The thioester group of thiobenzoate 4-F3CC6H4C(O)SR (R = 4-FC6H4CH2, 3-H3COC6H4, 2-naphthyl, etc.) is transferred to the α-oxy carbon of various cyclic/acyclic ethers such as THF, tetrahydropyran, 1,4-dioxane, diethylether, anisole, and tert-butylmethylether, which is opposite to the commonly expected chem. reactivity involving acyl group transfer via the weaker C(acyl)-S activation. Through mechanistic studies, it was proposed that the reaction has been initiated by photocatalytic reduction and fragmentation of the thioester into an acyl radical and a thiolate. A nickel complex binds to the thiolate and induces the decarbonylation of the acyl radical to form an aryl radical, which abstracts hydrogen from the α-oxy carbon of the ether. The resulting α-oxy C(sp3) centered radical re-binds to the (RS)(CO)Ni complex, which undergoes CO migratory insertion and reductive elimination to give the desired thioester product RSC(O)R1 (R1 = tetrahydrofuran-2-yl, dioxan-2-yl, tetrahydropyran-2-yl, etc.).
Chemical Science 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, HPLC of Formula: 258278-25-0.
Referemce:
https://en.wikipedia.org/wiki/Imidazole,
Imidazole | C3H4N2 – PubChem