CAS 153433-26-2: 1H-Imidazolium, 2-chloro-4,5-dihydro-1,3-dimethyl-, tetrafluoroborate(1-) (1:1)

CIB is an imidazolium coupling reagent used in amide and ester synthesis, efficient with sterically hindered amino acids. CIB is also employed in the synthesis of some Pd and Ni metal complexes used as catalysts for the hydroarylation of dienes.

2-Chloro-1,3-dimethylimidazolinium tetrafluoroborate

2-Chloro-1,3-dimethylimidazolium tetrafluoroborate is a reagent for esterification of C-terminal amino acids to Wang resin without racemization and for coupling α,α-dimethyl amino acids; and for preparation of the benzotriazol-1-yloxy derivative, a new coupling reagent. It is used as a reagent for esterification and peptide coupling of sterically hindered amino acids; preparation of efficient diazo-transfer reagents; oxidative insertion for palladium and nickel catalyst synthesis; and preparation of catalysts for use in coupling reactions. This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.