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. 2021 Mar 5;40(6):693–701. doi: 10.1021/acs.organomet.0c00788

Scheme 1. Phosphine Synthesis: Background and This Work.

Scheme 1

Left: (a) direct reduction of P(V)=O or P(V)=S affording P(III); (b) conversion of P(V)=O or P(V)=S to activated phosphonium salt; (c) reduction of activated phosphonium salt to P(III); (d) conversion of activated phosphonium salt to phosphine–borane; (e) deprotection of phosphine–borane affording P(III). Right-top: (f) BASFs conversion of Ph3PO to Ph3P using phosgene and silicon. Right-bottom: (g) Paradies et al. recent conversion of Ph3PO to Ph3P using oxalyl chloride and pressurized hydrogen. Center-bottom: (h) this work.