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Inside Cover: Controlled Generation of 9‐Boratriptycene by Lewis Adduct Dissociation: Accessing a Non‐Planar Triarylborane (Angew. Chem. Int. Ed. 30/2020)
Author(s) -
Chardon Aurélien,
Osi Arnaud,
Mahaut Damien,
Doan ThuHong,
Tumanov Nikolay,
Wouters Johan,
Fusaro Luca,
Champagne Benoît,
Berionni Guillaume
Publication year - 2020
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Reports
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.202007536
Subject(s) - triptycene , lewis acids and bases , chemistry , boron , adduct , dissociation (chemistry) , planar , atom (system on chip) , cover (algebra) , crystallography , polymer chemistry , organic chemistry , catalysis , mechanical engineering , computer graphics (images) , computer science , engineering , embedded system
Escaping from the planar geometry of trivalent boron Lewis acids is enabled by incorporating a boron atom at the edge of the triptycene scaffold. In their Communication on page 12402, G. Berionni and co‐workers describe the preparation of the elusive 9‐boratriptycene, a triarylborane with unprecedented structure and high Lewis acidity, due to the very low reorganization energy of the triptycene core and the absence of conjugation of its B atom orbitals with the orthogonally oriented aryl rings.