Recommanded Product: Trimethylphosphineoxide. The mechanism of aromatic electrophilic substitution of aromatic heterocycles is consistent with that of benzene. Compound: Trimethylphosphineoxide, is researched, Molecular C3H9OP, CAS is 676-96-0, about Phosphonium Phenolate Zwitterion vs. Phosphonium Ylide: Synthesis, Characterization and Reactivity Study of a Trimethylphosphonium Phenolate Zwitterion. Author is Xiao, Jing; Li, Qiang; Shen, Ruwei; Shimada, Shigeru; Han, Li-Biao.
4-Methoxy-3-(trimethylphosphonio)phenolate was obtained from a regioselective addition of PMe3 to p-quinone monoacetal. This compound undergoes hydrogen isotope exchange with D2O or CD3CN, and is capable of catalyzing H/D exchange of CD3CN with substrates bearing weakly acidic hydrogens. It exhibits similar reactivity to phosphorus ylides for olefinations of aldehydes. A possible tautomerization between the phosphonium phenolate zwitterion and phosphonium ylide is proposed for the first time to rationalize the unique reactivity.
In addition to the literature in the link below, there is a lot of literature about this compound(Trimethylphosphineoxide)Recommanded Product: Trimethylphosphineoxide, illustrating the importance and wide applicability of this compound(676-96-0).
Reference:
Isoxazole – Wikipedia,
Isoxazole | C3H3NO – PubChem