1,2,3,4,5,6-HEXAMETHYLBICYCLO[2.2.0]HEXA-2,5-DIENE (7641-77-2) 's Synthetic route

An Important Limitation in the Reactions of 1-Chloro-1-alkenes with n- or sec-Butyllithium

Nelson, Donna J.

Development of a well-defined silica-supported tungstenocarbyne complex as efficient heterogeneous catalyst for alkyne metathesis

Merle, Nicolas  Taoufik, Mostafa  Nayer, Morad  Baudouin, Anne  Roux, Erwan Le  Gauvin, Régis M.  Lefebvre, Frédéric  Thivolle-Cazat, Jean  Basset, Jean-Marie

The interaction of [W({triple bond, long}C-tBu)(CH₂-tBu)(OAr)₂] (Ar = 2,6-iPr₂C₆H₃) (1), with the hydroxyl groups of a silica dehydroxylated at 700 °C leads to [({triple bond, long}SiO)W(OAr)₂({triple bond, long}C-tBu)] (2) which was characterized by IR, solid-state NMR and mass balance analysis. This well-defined surface species is an efficient catalyst for the metathesis of pent-2-yne.