Schafer, "Bis(amidate) titanium precatalyst for the intermolecular hydroamination of allenes," Inorganica Chimica Acta, vol.
Cazes, "Palladium-catalyzed addition of malonate type compounds to allenes via a hydropalladation process," Tetrahedron Letters, vol.
The origin of the bent and fluxional skeleton of heavy allenes
is ascribed to the Jahn-Teller distortion (18) associated with the effective [pi]-[[pi].sup.*] orbital mixing, as schematically shown in Fig.
Analysis of the FTIR spectra shows that the co-pyrolysis oil contains novel alkynes or allenes
, not occurring in shale oil or LDPE oil.
Laffey, "An expedient synthesis of trisubstituted allenes
," Tetrahedron Letters, vol.
Their topics include the fabulous destiny of sulfenic acids, sustainable catalytic oxidations with peroxides, the iridium-catalyzed hydrogenation of minimally functionalized olefins using phosphite-nitrogen ligands, golden times for allenes
, and the synthesis of chiral imidate ligands and their applications in asymmetric catalysis.
The use of allenes
, hydrocarbons in which one atom of carbon is connected by double bonds with two other atoms of carbon, has over the past 20 years become more and more popular in organic chemistry, even being used in fields such as metal-catalyzed reactions where their use was previously difficult due do selectivity problems.
Eight contributions address general aspects and historical background, Michael Addition, addition to carbonyl compounds, nucleophilic allylic alkylation and hydroarylation of allenes
, nucleophilic substitution on Csp 3 carbon atoms, unactivated alkenes, catalytic asymmetric Friedel-Crafts alkylations in total synthesis, and industrial Friedel-Crafts chemistry.