Arylation of hydrazines, which are a special class of nitrogen compounds, is of high interest because of their pharmaceutical importance. Both organobismuth reagents 5b,8 and aryl iodides 9 were recently used in the preparation of substituted hydrazines, whereas Lan's and Lam's works involved arylboronic acids. 3,6 All these methods start with a N−H compound, although substituted hydrazines can also be obtained by addition of an aryl-containing nucleophile to azo compound. The ...