Titanium-Catalyzed Hydroaminoalkylation of Alkenes by CH Bond Activation at sp<sup>3</sup>Centers in the α-Position to a Nitrogen Atom
作者:Raphael Kubiak、Insa Prochnow、Sven Doye
DOI:10.1002/anie.200805169
日期:2009.1.26
Good for primary and secondary amines: Hydroaminoalkylations of alkenes, which take place by CHbondactivation in the α‐position to nitrogen atoms, are catalyzed by various neutral titanium complexes (see scheme). Primary as well as secondary amines can be used as substrates, and the reactions can be achieved intra‐ and intermolecularly.
An Aminopyridinato Titanium Catalyst for the Intramolecular Hydroaminoalkylation of Secondary Aminoalkenes
作者:Jaika Dörfler、Besnik Bytyqi、Sascha Hüller、Nicola M. Mann、Christian Brahms、Marc Schmidtmann、Sven Doye
DOI:10.1002/adsc.201500287
日期:2015.7.6
2‐(methylamino)pyridinato titanium complex initially synthesized by Kempe is used as catalyst for efficient intramolecularhydroaminoalkylation reactions of secondaryaminoalkenes. The corresponding reactions of N‐aryl‐substituted 1‐aminohept‐6‐enes and 1‐aminohex‐5‐enes directly give access to 2‐methylcyclohexyl‐ or 2‐methylcyclopentylamines in good yields. In addition, intramolecularhydroaminoalkylations of an N‐alkyl‐substituted