4,6-Bis(diphenylphosphino)-10H-phenoxazine
CAS: 261733-18-0
Category: Organic Intermediates
| Purity | Technical Grade ≥97%; Research Grade ≥98%; Catalyst Grade ≥99%; Electronic Grade ≥99.5% |
| Molecular Formula | C36H27NOP2 |
| Molecular Weight | 547.55 |
| Appearance | White to pale yellow crystalline powder |
| Packaging | 1 g, 5 g, 10 g, 25 g, 100 g amber glass bottle or fluorinated HDPE bottle; vacuum-sealed aluminum foil bag under nitrogen for bulk packaging |
| Testing Indicators | Appearance — Visual inspection; Identification — ¹H NMR, ¹³C NMR, ³¹P NMR, FTIR and HRMS; Purity — HPLC (UV) and/or GC where applicable; Assay — HPLC area normalization; Phosphine oxide impurity — ³¹P NMR or HPLC; Water content — Karl Fischer titration (GB/T 6283); Residual solvents — GC (USP <467>); Melting point — Capillary melting point determination; Elemental analysis — CHN elemental analyzer. |
| Storage Notes | Store in a tightly sealed container under dry nitrogen or argon in a cool, dry, well-ventilated area. Protect from moisture, oxygen, direct sunlight, and heat. Long-term storage at 2–8°C under inert atmosphere is recommended. Minimize exposure to air during handling. |
| Lead Time | 10 days |
A sterically demanding bidentate phosphine ligand widely used in transition-metal catalysis. Commonly employed in palladium-, nickel-, rhodium-, and iridium-catalyzed cross-coupling reactions including Buchwald-Hartwig amination, Suzuki-Miyaura coupling, Negishi coupling, Kumada coupling, and C-N/C-C bond formation. Also used in catalyst development, pharmaceutical intermediate synthesis, fine chemical production, and organometallic research.