Gokanapalli, Anusha published the artcileBenzimidazole bearing Pd-PEPPSI complexes catalyzed direct C2-arylation/heteroarylation of N-substituted benzimidazoles, SDS of cas: 620-20-2, the publication is Applied Organometallic Chemistry (2020), 34(10), e5869, database is CAplus.
A convenient and highly efficient palladium-catalyzed direct C2-arylation/heteroarylation of N-substituted benzimidazole derivatives such as N-benzyl/3-chlorobenzyl/2,4,6-trimethylbenzyl/2,4,6-triisopropylbenzyl/aryl benzimidazoles I (R = H; R1 = Bn, 4-chlorophenyl, (2,4,6-trimethylphenyl)methyl, etc.) with various aryl/heteroaryl bromides R2Br (R2 = Ph, thiophen-3-yl, phenanthren-9-yl, etc.) in the presence of Pd-PEPPSI (palladium-pyridine enhanced pre-catalyst preparation stabilization and initiation) complexes is reported. A series of different sym. and unsym. N,N’-diaralkyl benzimidazole-bearing Pd-PEPPSI complexes II (R = 5-Me, 5,6-dimethyl; R3 = Me, 4-fluorophenyl, (2,4,6-trimethylphenyl)methyl, etc.) was prepared Among all of the prepared complexes, II = (R = 5,6-di-Me, R1 = R3 = [2,4,6-tris(propan-2-yl)phenyl]methyl) effectively tuned the reaction at a relatively higher rate under mild reaction conditions in an ethanol-water system. In addition, the catalytic process avoids the use of external ligand and additives. Further the reactivity was compared with com. available copper-N-heterocyclic carbene catalyst, but the reaction was less successful. With the optimized reaction conditions, a wide range of 2-aryl/heteroaryl-N-substituted benzimidazoles were synthesized in good to excellent yields via Csp2-H/Csp2-X biaryl cross-coupling.
Applied Organometallic Chemistry published new progress about 620-20-2. 620-20-2 belongs to chlorides-buliding-blocks, auxiliary class Chloride,Benzyl chloride,Benzene, name is 3-Chlorobenzylchloride, and the molecular formula is C7H6Cl2, SDS of cas: 620-20-2.
Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics