1,4-Bis(diphenylphosphino)butane

• CAT Number: L041992
• CAS Number: 7688-25-7
• Molecular Formula: C28H28P2
• Molecular Weight: 426.51
• Purity: ≥95%
• IUPAC Name: 4-diphenylphosphanylbutyl(diphenyl)phosphane
• InChI: InChI=1S/C28H28P2/c1-5-15-25(16-6-1)29(26-17-7-2-8-18-26)23-13-14-24-30(27-19-9-3-10-20-27)28-21-11-4-12-22-28/h1-12,15-22H,13-14,23-24H2
• InChIKey: BCJVBDBJSMFBRW-UHFFFAOYSA-N
• SMILES: C1=CC=C(C=C1)P(CCCCP(C2=CC=CC=C2)C3=CC=CC=C3)C4=CC=CC=C4

1,4-Bis(diphenylphosphino)butane (CAT: L041992) is a bidentate phosphine ligand widely used in coordination chemistry and homogeneous catalysis. Featuring two diphenylphosphino groups connected by a flexible four-carbon butylene linker, dppb forms stable chelate complexes with various transition metals, such as palladium, rhodium, and ruthenium. This ligand is especially effective in cross-coupling reactions (e.g., Heck, Suzuki, and Stille), hydrogenation, and carbon–carbon bond-forming processes. Its steric and electronic properties offer tunability for catalytic performance. Dppb is a valuable tool in organometallic synthesis, fine chemical production, and pharmaceutical development, promoting high activity, selectivity, and catalyst longevity.