title: Unlocking the N(2)  selectivity of benzotriazoles: regiodivergent and highly selective coupling of benzotriazoles with allenes.
abstract: The rhodium-catalyzed, highly N(2) - and N(1) -selective coupling of benzotriazoles with allenes is reported. The exceptionally high N(2) and N(1) selectivities were achieved by using a rhodium(I)/DPEphos and rhodium(I)/JoSPOphos catalyst, respectively. This method permits the atom-economic synthesis of valuable branched N(2) - and N(1) -allylated benzotriazole derivatives and allows for preliminary studies of their reactivity.
authors.affiliation: Institut für Organische Chemie, Albert-Ludwigs-Universität Freiburg, Albertstrasse 21, 79104 Freiburg im Breisgau (Germany).
authors.forename: Kun
authors.initials: K
authors.lastname: Xu
authors.forename: Niels
authors.initials: N
authors.lastname: Thieme
authors.forename: Bernhard
authors.initials: B
authors.lastname: Breit
keywords: allenes; allylic compounds; benzotriazoles; heterocyles; homogeneous catalysis