Desulfurization of thioamides was accomplished using a semicatalytic amount of Bu 4 NBr. The corresponding amides were obtained in high yields, with good functional group compatibility.
Invited for the cover of this issue is the group of Hirokazu Tsukamoto at Tohoku University (current affiliation: Yokohama University of Pharmacy). The image depicts anti‐selective arylative cyclization reactions of alkynyl aldehydes with arylboronic acids under palladium catalysis in methanol to afford endo‐ and exo‐cyclic products. Read the full text of the article at 10.1002/chem.202203068.
Pink and blue electrical cords represent bond formation that gives the endo‐ and exo‐adducts, respectively, shown on the light bulbs. The electrical plugs highlight the alkyne carbons attacked by the palladium catalyst, which then undergoes transmetalation with the arylboronic acid. Typical combinations of the ligand and alkyne substituent to give endo‐ and exo‐adducts are shown on the boxes at the end of the outlets. Methanol as solvent not only activates the carbonyl oxygen, but also promotes transmetalation with the arylboronic acid. More information can be found in the Research Article by H. Tsukamoto and co‐workers. (DOI: 10.1002/chem.202203068).
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