Preference of carbonyl ligands over isocyanide ligands in nucleophile-induced coupling with alkylidyne ligands

W(CPh)Cl(CNCMe3)2(CO)2 was prepared by reaction of W(CPh)Cl(CO)2(PY)2 with CNCMe3 in CH2Cl2. W(CPh)I(CNCMe3)2(CO)2 was prepared by sequential reaction of W(CPh)Cl(CO)2(PY)2 with NaI in THF and with CNCMe3 in CH2Cl2. Reaction of W(CPh)Cl(CNCMe3)2(CO)2 with pyrrole-2-carboxaldehyde methylimine in the...

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Bibliographic Details
Published in:Organometallics 1992-12, Vol.11 (12), p.4358-4362
Main Authors: Mayr, Andreas, Holmes, Stephen M, Bastos, Cecilia M
Format: Article
Language:English
Subjects:
Chemistry
Chemistry, Inorganic & Nuclear
Chemistry, Organic
Exact sciences and technology
Organic chemistry
Organometalloidal and organometallic compounds
Physical Sciences
Preparations and properties
Science & Technology
Transition metals derivatives
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Summary:W(CPh)Cl(CNCMe3)2(CO)2 was prepared by reaction of W(CPh)Cl(CO)2(PY)2 with CNCMe3 in CH2Cl2. W(CPh)I(CNCMe3)2(CO)2 was prepared by sequential reaction of W(CPh)Cl(CO)2(PY)2 with NaI in THF and with CNCMe3 in CH2Cl2. Reaction of W(CPh)Cl(CNCMe3)2(CO)2 with pyrrole-2-carboxaldehyde methylimine in the presence of KOH in THF gives the ketenyl complex K[W-(C6H7N2)2(PhCCO)(CO)]. Reaction of W(CPh(CNCMe3)2(CO)2 with NaS2CNEt2 in THF gives a mixture of products, of which Na[W(PhCCOXS2CNEt2)2(CO)] is the main product. Reaction of W(CPh)Cl(CNCMe3XCO)(PMe3)2 with NaS2CNEt2 in THF leads to the formation of [W-(PhCCO)(S2CNEt)2(COXPMe3)2] and [W(CPhXS2CNEt2)-(CO)(PMe3)2] as the main products.
ISSN:0276-7333
1520-6041
DOI:10.1021/om00060a067