Slightly activated derivates bearing 4-Me-and 4-tBu-substituents 1d and 1e were obtained in up to 68% yield. The more electron-rich 4-OMe-substituted derivate gave an inseparable product mixture of 1f after the cyclization step. The Cl-and Fsubstituted derivates 1g and 1h were yielded under the slightly optimized conditions for electron-poor derivates in 54% and 49% yield. CN-and CF3-Substitutions were viable as well and subsequently 1i and 1j were obtained in up to 70% yield. Here, the cyclization step resulted in a decomposition of the oxidized intermediate. A 4-phenylsubstituted derivative 1k did not react at all. A variation of the substitution pattern was feasible as 2-Br, 3-Br and 5-Br derivates 1l-n were isolated in 39% to 63% yield. This indicated that electronic or steric effects from substituents close to the bridge atoms may be relevant in the oxidation step. Also limitations of the method were visible for extended -systems, as already observed for 1k, but also for the naphyhtyl-derivative 1o.