TY - JOUR
T1 - Attack by allenes on a bridging alkylidyne ligand at a ditungsten centre
T2 - Formation of a bridging Allyl-η3-W1,σ-W2-alkylidene ligand
AU - Chisholm, Malcolm H.
AU - Folting, Kirsten
AU - Heppert, Joseph A.
AU - Streib, William E.
PY - 1985
Y1 - 1985
N2 - The alkylidyne bridged compounds [(Me3SiCH2)2W(µ-CSiMe3)]2 (1), [(Me3SiCH2)(ButO)W(µ-CSiMe3)]2 (2), and [(PriO)2W(µ-CSiMe3)]2 (3) each react with allenes R1CH=C=CHR2, where R1 = R2 = H, Me or R1 = Me, Ph and R2= H, to give, by C-C bond formation between the tertiary carbon atom of the allene and the bridging carbon atom of one of the µ-CSiMe3 ligands, a bridging ligand which is formally a π-allyl to one tungsten atom and a terminal alkylidene to the other; the rate of reaction follows the order (1) >(2) >(3); CH2=C=CH2 > RCH=C=CH2 > RCH=C=CHR, and the C-C bond formation is stereoselective.
AB - The alkylidyne bridged compounds [(Me3SiCH2)2W(µ-CSiMe3)]2 (1), [(Me3SiCH2)(ButO)W(µ-CSiMe3)]2 (2), and [(PriO)2W(µ-CSiMe3)]2 (3) each react with allenes R1CH=C=CHR2, where R1 = R2 = H, Me or R1 = Me, Ph and R2= H, to give, by C-C bond formation between the tertiary carbon atom of the allene and the bridging carbon atom of one of the µ-CSiMe3 ligands, a bridging ligand which is formally a π-allyl to one tungsten atom and a terminal alkylidene to the other; the rate of reaction follows the order (1) >(2) >(3); CH2=C=CH2 > RCH=C=CH2 > RCH=C=CHR, and the C-C bond formation is stereoselective.
UR - http://www.scopus.com/inward/record.url?scp=37049094327&partnerID=8YFLogxK
U2 - 10.1039/C39850001755
DO - 10.1039/C39850001755
M3 - Article
AN - SCOPUS:37049094327
SN - 0022-4936
SP - 1755
EP - 1757
JO - Journal of the Chemical Society - Series Chemical Communications
JF - Journal of the Chemical Society - Series Chemical Communications
IS - 24
ER -