A dramatic effect of aryloxo ligands on the titanium-catalyzed hydroamination of alkynes.
The aryloxotitanium complex 1 is a highly chemo- and regioselective catalyst for intermolecular hydroamination of terminal alkynes. Branched imines are obtained in good to excellent yield (up to 99%) with various primary aromatic and aliphatic amines. [reaction: see text]
Khedkar
Vivek
V
Leibniz-Institut für Organische Katalyse (IfOK) an der Universität Rostock e.V., Buchbinderstrasse 5-6, D-18055 Rostock, Germany.
Tillack
Annegret
A
Beller
Matthias
M