Front Cover: Amphiphilic PdII‐NHC Complexes on 1, 3‐Alternate p‐tert‐Butylthiacalix[4]arene Platform: Synthesis and Catalytic Activities in Coupling and Hydrogenation Reactions (Eur. J. Org. Chem. 15/2020). Issue 15 (14th April 2020)