81500-92-7Relevant articles and documents
Linear Hydroaminoalkylation Products from Alkyl-Substituted Alkenes
Warsitz, Michael,Doye, Sven
supporting information, p. 15121 - 15125 (2020/10/23)
The regioselective conversion of alkyl-substituted alkenes into linear hydroaminoalkylation products represents a strongly desirable synthetic transformation. In particular, such conversions of N-methylamine derivatives are of great scientific interest, because they would give direct access to important amines with unbranched alkyl chains. Herein, we present a new one-pot procedure that includes an initial alkene hydroaminoalkylation with an α-silylated amine substrate and a subsequent protodesilylation reaction that delivers linear hydroaminoalkylation products with high selectivity from simple alkyl-substituted alkenes. For that purpose, new titanium catalysts have been developed, which are able to activate the α-C?H bond of more challenging α-silylated amine substrates. In addition, a direct relationship between the ligand structure of the new catalysts and the obtained regioselectivity is described.
Iridium-catalyzed oxidative olefination of furans with unactivated alkenes
Sevov, Christo S.,Hartwig, John F.
supporting information, p. 10625 - 10631 (2014/08/18)
The oxidative coupling of arenes and alkenes is an attractive strategy for the synthesis of vinylarenes, but reactions with unactivated alkenes have typically occurred in low yield. We report an Ir-catalyzed oxidative coupling of furans with unactivated olefins to generate branched vinylfuran products in high yields and with high selectivities with a second alkene as the hydrogen acceptor. Detailed mechanistic experiments revealed catalyst decomposition pathways that were alleviated by the judicious selection of reaction conditions and application of new ligands.
Synthesis of low generation phenylenealkylene dendrons as nonpolar building blocks for a dendrimer construction set
Beinhoff, Matthias,Karakaya, Birol,Schlüter, A. Dieter
, p. 79 - 90 (2007/10/03)
The gram scale syntheses of first and second generation (G1 and G2) dendrons 1-4, and 35, based on aryl and alkyl moieties, by Suzuki-Miyaura cross-coupling are presented. Both a divergent and an accelerated convergent route are applied. In addition, first results on the synthesis of hyperbranched oligomers of AB2 monomer 19 are reported.