(Me)(CH2)C4H3P(S)Ph;Sulfid des Phenyl-1-methylen-3-methyl-4-phospholen-4;4-methyl-3-methylidene-1-phenyl-1-sulfanylidene-2H-1lambda5-phosphole;4-methyl-3-methylidene-1-phenyl-1-sulfanylidene-2H-1λ5-phosphole
Boosting the Nucleophilicity of Phosphole Lone Pairs by Isomerization
摘要:
The phosphole isomer 4c can be obtained by nickelocene reduction complexation from the corresponding sulfide. It displays a ligating ability comparable to that of tristert-butylphosphine, and its [LPdCl2](2) complex efficiently catalyzes the deboronation homocoupling of arylboronic acids.
A 3-morpholinophosphole has been prepared from the appropriate 3-keto-4-phospholene oxide by reaction with morpholine in the presence of TiCl(4) as a catalyst, followed by reduction of the phosphoryl group by phenylsilane. Both theoretical and experimental studies show that the amino group enhances the reactivity of the diene but does not affect the lone pair at phosphorus. This observation has been used to devise a generating system for the transient phosphinidene complex [PhP-Fe(CO)(4)] that has been trapped by alkynes and ethanol.