Process for radical controlled polymerization or copolymerization of (meth)acryl and vinyl monomers and thus prepared (co)polymers

Patent (1998)

A process for a radical-controlled polymerisation or co-polymerisation of (meth)acrylic and/or vinylic monomers is effected en masse, solution, emulsion or suspension at a temperature which may be as low ... [more ▼]

A process for a radical-controlled polymerisation or co-polymerisation of (meth)acrylic and/or vinylic monomers is effected en masse, solution, emulsion or suspension at a temperature which may be as low as 0 degrees C, in the presence of a system comprising (i) a radical generator compound other than bromofluorene; and (ii) a catalyst consisting of a Pd complex of degree of oxidation zero, corresponding to formula Pd(0)L<1>L<2>L<3>L<4> (I), where L<1>-L<4> = ligand (possibly chiral) chosen from PRR<1>R<2>, P(OR)(OR<1>)(OR<2>), NRR<1>R<2>, ORR<1>, SRR<1>, SeRR<1>, AsRR<1>R<2> and SbRR<1>R<2>; and R, R<1>, R<2> = 1-14C alkyl (optionally substituted) or aromatic (optionally substituted), at least two of the ligands being capable of interconnecting with one or more bivalent radicals. [less ▲]

Synthesis of poly(norbornene-g-ε-caprolactone) copolymers by sequential controlled ring opening polymerization

in Polymer Bulletin (1998), 40(6), 631-638

Poly(norbornene-g-ε-caprolactone) copolymers have been prepared by the "grafting from" technique. Well controlled polynorbornene containing 5% acetate pendant groups has been firstly synthesized by ... [more ▼]

Poly(norbornene-g-ε-caprolactone) copolymers have been prepared by the "grafting from" technique. Well controlled polynorbornene containing 5% acetate pendant groups has been firstly synthesized by ruthenium complex-mediated ring opening metathesis polymerization. The acetate groups have been derivatized into aluminum alkoxides by hydrolysis into alcohol followed by reaction of the alcohol with triethylaluminum. The two polymerization steps are under complete control, so that graft copolymers have been synthesized with a narrow molecular weight distribution and are free from any detectable traces of the parent homopolymers as stated by selective fractionation experiments. These original copolymers have been characterized by SEC, FTIR, 1H NMR, DSC, TGA. [less ▲]

(Meth)acrylates pseudo-living radical polymerization in the presence of transition metal complexes: the Kharasch reaction revisited

in Polymer Preprints (1997), 38(1), 450-451

Synthèse stéréosélective de dérivés cyclopropaniques fonctionnalisés par réaction d'organométalliques α-hétérosubstitués sur des dérivés carbonylés α,β-insaturés. Application à la synthèse de la deltaméthrine, un insecticide puissant

Doctoral thesis (1993)

Straightforward synthesis of isopropylidenediphenylsulfurane and application to industrially viable stereoselective synthesis of deltamethrin insecticide

in Synthesis (1990), (4), 275-278

We describe three stereoselective syntheses of deltametrin, one of the most potent industrially available insecticides, from γ-alkoxy-α,β-unsaturated carbonyl compounds, isopropyldiphenylsulfonium ... [more ▼]

We describe three stereoselective syntheses of deltametrin, one of the most potent industrially available insecticides, from γ-alkoxy-α,β-unsaturated carbonyl compounds, isopropyldiphenylsulfonium tetrafluoroborate and potassium tert-butoxide. [less ▲]

Trip around the three-membered cycles syntheses

in de Meijere, Armin; Blechert, Siegfried (Eds.) Strain and its application in organic chemistry (1989)