- A
phosphorane (IUPAC name: λ5-phosphane) is a
functional group in
organophosphorus chemistry with
pentavalent phosphorus.
Phosphoranes have the general...
-
triphenylphosphine and the
diethyl azodicarboxylate into one reagent: a
phosphorane ylide. Both (cyanomethylene)trimethylphosphorane (CMMP, R = Me) and...
- on the
Wittig Reaction of 2,2-Dimethylpropanal and Tributylbutylidene-
phosphorane",
Tetrahedron Lett., 30, 1361–1364 (1989)
Bruce E. Maryanoff, A. B. Reitz...
- the
first step in the
preparation of the
Wittig reagent. The
parent phosphorane (σ5λ5) is PH5,
which is unknown.[citation needed]
Related compounds containing...
-
alcohol as a
bulky Martin ligand variant for a new anti-apicophilic
phosphorane".
Dalton Trans. 39 (41): 9823–9829. doi:10.1039/C0DT00539H. PMID 20859600...
-
lithium to
intermediate 2
which undergoes a phosphate–
phosphorane rearrangement to
phosphorane 3
which on
reaction with
acetic acid
gives alcohol 4. Once...
- Ph3P=CR2 The
former is
called the
ylide form and the
latter is
called the
phosphorane form,
which is the more
familiar representation.
Crystallographic characterization...
-
Triphenylphosphine dichloride (Ph3PCl2)
exists both as the
pentacoordinate phosphorane and as the
chlorotriphenylphosphonium chloride,
depending on the medium...
- interaction.
Optimized Geometry HOMO LUMO
Pentacoordinate phosphetanes, or
phosphoranes,
present an
alternative geometric mantle on
which a P(V)
phosphorus center...
-
involves reaction of an
aldehyde or
ketone with a
Wittig reagent (or
phosphorane) of the type Ph3P=CHR to
produce an
alkene and Ph3P=O. The
Wittig reagent...
