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trans ‐Selective Insertional Dihydroboration of a cis ‐Diborene: Synthesis of Linear sp 3 ‐sp 2 ‐sp 3 ‐Triboranes and Subsequent Cationization
Author(s) -
Schmidt Uwe,
Werner Luis,
Arrowsmith Merle,
Deissenberger Andrea,
Hermann Alexander,
Hofmann Alexander,
Ullrich Stefan,
Mattock James D.,
Vargas Alfredo,
Braunschweig Holger
Publication year - 2020
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201911645
Subject(s) - chemistry , boranes , photoisomerization , cationic polymerization , stereochemistry , hydride , silanes , aryl , medicinal chemistry , polymer chemistry , boron , alkyl , organic chemistry , isomerization , catalysis , hydrogen , silane
The reaction of aryl‐ and amino(dihydro)boranes with dibora[2]ferrocenophane 1 leads to the formation 1,3‐ trans ‐dihydrotriboranes by formal hydrogenation and insertion of a borylene unit into the B=B bond. The aryltriborane derivatives undergo reversible photoisomerization to the cis ‐1,2‐μ‐H‐3‐hydrotriboranes, while hydride abstraction affords cationic triboranes, which represent the first doubly base‐stabilized B 3 H 4 + analogues.