Doyle, Laurence R. published the artcileA Convenient Synthetic Protocol to 1,2-Bis(dialkylphosphino)ethanes, COA of Formula: C23H43NP2, the publication is Advanced Synthesis & Catalysis (2014), 356(2-3), 603-608, database is CAplus and MEDLINE.
1,2-Bis(dialkylphosphino)ethanes are readily prepared from the parent phosphine oxides, via a novel NaAlH4/NaH reduction protocol of intermediate chlorophosphonium chlorides. This approach is amenable to multi-gram syntheses, uses readily available and inexpensive reagents, and benefits from a facile nonaqueous work-up in the final reductive step.
Advanced Synthesis & Catalysis published new progress about 338800-13-8. 338800-13-8 belongs to pyridine-derivatives, auxiliary class Bis-phosphine Ligands, name is 2,6-Bis((di-tert-butylphosphino)methyl)pyridine, and the molecular formula is C23H43NP2, COA of Formula: C23H43NP2.
Referemce:
https://en.wikipedia.org/wiki/Pyridine,
Pyridine | C5H5N – PubChem