The electrophilic ipso-substitution of trimethylsilyl-substituted benzene derivatives into nitrosobenzene derivatives is reported. The optimization of the reaction conditions was performed for moderately electron-deficient, electron-rich, and sterically hindered starting materials by varying reaction time, temperature, and equivalents of NOBF. Also, a stable intermediate of the nitrosation reaction could be characterized by F NMR which can be assigned to a NO adduct with the nitrosobenzene derivative. This complex decomposes upon aqueous workup and liberates the desired nitrosobenzene derivative.

An axiomatic foundation of a quantum theory for microsystems & the presence of external fields is developed. The space-time structure is introduced by considering the &variance of the theory under a kinematic &variance group. The formalism is illustrated by the example of charged partieles in electromagnetic potentials. In the example, gauge &variance is discussed.