new axially chiral N-acryl-N-allyl-o-tert-butylanilide wih high optical purity (96–97 %ee) was prepared in good yield from (S)-O-acetyl lactic acid and N-allyl o-t-butylaniline. Iodinemediated Diels-Alderreaction of the axially chiral N-acryl anilide with cyclopentadiene or isoprene proceeded with high diastereoselectivity.
Catalytic Asymmetric Synthesis of Optically Active Atropisomeric Anilides through Enantioselective <i>N</i>-Allylation with Chiral Pd-tol-BINAP Catalyst
Catalytic asymmetric N-allylation reaction of ortho-tert-butylanilide derivatives with diallyl carbonate proceeds in the presence of tol-BINAP-Pd catalyst to give chiral N-allyl ortho-tert-butylanilides of 32-44%ee in excellent chemical yields (> or = 90%).
An adhesive material contains a styrene resin, a (meth)acrylate resin, and an oxidatively polymerizable compound, wherein the adhesive material has a sea-island structure that includes a sea portion containing the styrene resin and an island portion containing the (meth)acrylate resin, and the glass transition temperature of the (meth)acrylate resin is at least 30° C. lower than the glass transition temperature of the styrene resin.
An adhesive material contains a styrene resin, a (meth)acrylate resin, and an oxidatively polymerizable compound, wherein the adhesive material has a sea-island structure that includes a sea portion containing the styrene resin and an island portion containing the (meth)acrylate resin, and the glass transition temperature of the (meth)acrylate resin is at least 30° C. lower than the glass transition temperature of the styrene resin.
Optically Active Axially Chiral Anilide and Maleimide Derivatives as New Chiral Reagents: Synthesis and Application to Asymmetric Diels−Alder Reaction
New axially chiral N-acryl-N-allyl-o-tert-butylanilide and N-(o-tert-butylphenyl)-2-methylmaleimide with high optical purity and definite absolute configurations were prepared from o-tert-butylaniline and (S)-O-acetyl lactic acid or (R)-2-methylsuccinic acid, respectively. Iodine- or Lewis acid-mediated asymmetricDiels-Alderreaction of these axially chiral compounds with various dienes proceeded