A convenient synthesis of thieno[3,2‐b]indoles and thieno[3,4‐b]indoles has been developed. The protocol involves a site‐selective Suzuki reaction, followed by a double C–N coupling reaction using anilines, benzylamines, or alkylamines. The yields range from good to excellent.

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The intensity distribution of the field along the symmetry axis of the dielectric -loaded groove waveguide (GW) for two variants of the injection into it of the microwave energy excitation of two counter-traveling waves and for the case of additive to feed him energy from the upper-trough are considered and experimentally investigated. It is shown, that the microwave energy injection from the upper quadrangular waveguides into the groove waveguide allows to provide rather homogeneous energy distribution in the operating zones of the groove waveguide and rather homogeneous interaction of microwave energy with dielectric material, moving through them. The initial data for setting three-dimensional fields -distribution modeling in such a system is formulated

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