Phosphacumulene ylides reactions with acidic compounds

In the reaction of OH-, NH-, SH- and CH-acidic compounds with phosphacumulene ylides the anion Nu of the initially formed phosphonium salt (c/. equation 101) is so nucleophilic, that addition of the anion to give a new alkylidenephosphorane is faster than cycloaddition of a second mole of starting ylide (equation 105). ° ... 

The addition of acidic compounds to phosphacumulene ylides yielding substituted alkylidenephosphoranes is of particular interest in the reaction of those acidic molecules which carry, besides the Y— bond, a group capable of cyclization with the ylide function formed by addition. " ... 

---

See also in sourсe #XX -- [ , ]

See also in sourсe #XX -- [ , ]

---