reaction conditions by applying a lesser amount of Xantphos or different ligand systems significantly decreased the yield or proved to be completely unsuccessful (Table 1, entries 6−9). Utilizing either Pd(OAc)2 or Xantphos yielded 0% of 3aa, respectively (Table 1, entries 10 and 11). The use of air instead of an oxygen atmosphere was less successful and afforded the product in only 41% yield (Table 1, entry 12). Moreover, to prevent triphenylene formation the slow or stepwise addition of 2a was not necessary. The catalytic system in combination with phenyl thiocyanate bypasses this undesired reaction pathway. Other common oxidants such as benzoquinone, silver carbonate, and copper(II) acetate entirely suppressed the product formation. Application of oxone and ammonium persulfate had no influence on the reaction and afforded the product in similar yields as when under an argon atmosphere.