1,3-Bis(2,4,6-trimethylphenyl)-4,5-dihydroimidazolium tetrafluoroborate

• CAT Number: L011225
• CAS Number: 245679-18-9
• Molecular Formula: C21H27BF4N2
• Molecular Weight: 394.30
• Purity: ≥95%
• IUPAC Name: 1,3-bis(2,4,6-trimethylphenyl)-4,5-dihydroimidazol-1-ium;tetrafluoroborate
• InChI: InChI=1S/C21H27N2.BF4/c1-14-9-16(3)20(17(4)10-14)22-7-8-23(13-22)21-18(5)11-15(2)12-19(21)6;2-1(3,4)5/h9-13H,7-8H2,1-6H3;/q+1;-1
• InChIKey: VNRDQIOMNLIVQJ-UHFFFAOYSA-N
• SMILES: [B-](F)(F)(F)F.CC1=CC(=C(C(=C1)C)N2CC[N+](=C2)C3=C(C=C(C=C3C)C)C)C

1,3-Bis(2,4,6-trimethylphenyl)-4,5-dihydroimidazolium tetrafluoroborate（Cat No.:L011225）is a stable, crystalline N-heterocyclic carbene (NHC) precursor salt featuring bulky mesityl (2,4,6-trimethylphenyl) groups on the nitrogen atoms of a dihydroimidazolium ring. The tetrafluoroborate counterion imparts stability and solubility in polar solvents. Upon deprotonation, it generates a free carbene that serves as a powerful ligand in transition metal catalysis, including cross-coupling, olefin metathesis, and hydrogenation reactions. The steric hindrance from the mesityl groups enhances catalyst stability and selectivity. This compound is widely used in organometallic chemistry and homogeneous catalysis for building robust, efficient catalytic systems.