Unlocking the
<i>N</i>
<sup>2</sup>
Selectivity of Benzotriazoles: Regiodivergent and Highly Selective Coupling of Benzotriazoles with Allenes
作者:Kun Xu、Niels Thieme、Bernhard Breit
DOI:10.1002/anie.201403682
日期:2014.7.7
The rhodium‐catalyzed, highly N2‐ and N1‐selective coupling of benzotriazoles with allenes is reported. The exceptionally high N2 and N1 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 N2‐ and N1‐allylated benzotriazole derivatives and allows for preliminary studies of their