The modified heteroatom bridge allowed the coupling with different trimethylsilyl(aryl) triflates 4. The reaction of 7a with various dimethyl-substituted aryne precursors 4b and 4c successfully provided 2o and 2p in 71% and 45% yield. The reaction with 4d yielded the methoxy-substituted triflate 2q in 45% yield, indicating that a strong electron-donating group may be relevant during the oxidation/cyclization sequence.