“Lignophines”: lignin-based tertiary phosphines with metal-scavenging ability

Abstract

Methacrylated lignin was reacted with PH3(g) to prepare a phosphorus rich bio-based polymer containing PH/PH2 functional groups, which were converted to tertiary phosphine units via the phosphane-ene reaction. This represents...

Taming PH3: State of the Art and Future Directions in Synthesis

“…34 Ragogna has also employed the early methods to prepare phosphinated lignin, which is effective as a metal scavenger. 35 A hydrophosphination that, unsurprisingly, does not need any activating agents or a catalyst is the reaction of PH 3 with the highly activated imine 1,1,1,3,3,3-hexafluoropropan-2imine, generating 4.75 g (96% yield) of the geminal substituted NH 2 ,PH 2 product from a large-scale synthesis. 36 In contrast, many hydrophosphination reactions involving PH 3 have employed transition metal catalysts; Pringle undertook the seminal work in this field and used platinum chloride salts, as well as tetrakis(phosphino) Pt, Pd, and Ni complexes for the reaction of formaldehyde with PH 3 .…”

“…Ragogna employed AIBN to prepare tertiary fluorinated alkyl phosphines which can then be transformed into phosphonium salts to attenuate the properties of UV-curable resins . Ragogna has also employed the early methods to prepare phosphinated lignin, which is effective as a metal scavenger …”

Fluorescent phosphine oxide-containing hyperbranched polyesters: design, synthesis and their application for Fe3+detection

“…As a result, only a few reports have been published on the use of PH 3 as a feedstock for the preparation of P-containing polymers. 12,13 Fortunately, the possible risks associated with PH 3 utilization can be reduced extensively by its chemical fixation as water-soluble reactive phosphonium salts, namely, tetrakis(hydroxymethyl) phosphonium sulfate (THPS) and tetrakis(hydroxymethyl) phosphonium chloride (THPC). 14 This technology has been well established as an essential process to handle the PH 3 tail gas that is generated during the preparation of hypophosphite salts.…”