Yu, Haihua published the artcileControllable access to multi-substituted imidazoles via palladium(II)-catalyzed C-C coupling and C-N condensation cascade reactions, HPLC of Formula: 480438-56-0, the main research area is imidazole preparation; aminoacetonitrile boronic acid palladium catalyst cascade condensation cyclization.
A novel and efficient protocol for the synthesis of various 2,4-disubstituted, 1,2,4-trisubstituted and 1,2,4,5-tetra-substituted imidazoles I [R1 = Me, CF3, Ph, etc.; R2 = H, Ph, Bn; R3 = H, Me; R4 = Ph, 4-FC6H4, 2-MeC6H4, etc.] via cascade palladium catalyzed C-C coupling followed by intramol. C-N bond formation was developed. Readily accessible boronic acids and N-substituted-2-aminoacetonitriles were firstly reported as starting materials to construct di-, tri-, and tetra-substituted imidazoles in good to excellent yield. The protocol was the first report to prepare multi-substituted imidazoles from readily accessible aminoacetonitrile and boronic acid.
Chemical Communications (Cambridge, United Kingdom) published new progress about Condensation reaction. 480438-56-0 belongs to class chlorides-buliding-blocks, name is 3-Chloro-4-isopropoxyphenylboronic acid, and the molecular formula is C9H12BClO3, HPLC of Formula: 480438-56-0.
Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics