Chen, Xuemeng published the artcileTransition-Metal-Catalyzed Transformation of Sulfonates via S-O Bond Cleavage: Synthesis of Alkyl Aryl Ether and Diaryl Ether, Recommanded Product: 1,3-Bis(2,6-diisopropylphenyl)-4,5-dihydro-1H-imidazol-3-ium chloride, the publication is Organic Letters (2019), 21(22), 8879-8883, database is CAplus and MEDLINE.
The catalytic conversion of sulfonates, a versatile class of pharmaceutical intermediates, is usually based on C-O bond cleavage. In this paper, however, a rare transformation of sulfonates R1SO2OR2 [R1 = 2-pyridyl, 3-methyl-2-pyridyl, 5-trifluoromethyl-2-pyridyl, etc.; R2 = Ph, 2-naphthyl, 3-quinolyl, Ph(CH2)3, 1-heptyl, 2-adamantyl, etc.] via S-O bond cleavage catalyzed by transition metal. Alkyl sulfonates underwent an intramol. desulfitative C-O coupling to form aryl alkyl ethers in the presence of a nickel catalyst, whereas aryl sulfonates performed similarly under palladium complex catalysis to give diaryl ethers. This transformation could tolerate a wide range of functionalities. Controlled experiments revealed that the 2-pyridyl group is necessary to promote the reaction as designed. Crossover experiments proved that this transformation might proceed partly in an intermol. pathway.
Organic Letters 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