Use of the Diels–Alder Cycloaddition of Tetracyclone and Internal Aryl Acetylenes for the Synthesis of Functionalized Atrop­isomeric Biaryls

Abstract The Diels–Alder cycloaddition reaction of tetracyclone and functionalized, internal aryl acetylenes gave access to a number of bulky atropisomeric biaryls in good to excellent yield. The synthesis is convenient and yields the pure biaryls without tedious work‐up and purification procedures. Exemplarily the atropisomers have been resolved via the diastereomers in an easy and efficient manner to yield the enantiomers.