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. 2019 Aug 20;55(68):10166-10169.
doi: 10.1039/c9cc04199k.

Arylallenes and the halogeno-B(C6F5)2 reagents: facile formation of 2-borylindenes

Xin Tao  1 , Constantin G Daniliuc, Kateryna Soloviova, Cristian A Strassert, Gerald Kehr, Gerhard Erker
Affiliations

Arylallenes and the halogeno-B(C6F5)2 reagents: facile formation of 2-borylindenes

Xin Tao et al. Chem Commun (Camb). .

Abstract

Phenylallene reacts rapidly with ClB(C6F5)2 to give the respective 2-borylindene. Several substituted allenylarenes form the respective 2-B(C6F5)2 boryl-substituted indenes upon treatment with ClB(C6F5)2 or BrB(C6F5)2 as well. Bis- and tris-allenylarenes form the corresponding products featuring multiple five-membered ring annulations, including a symmetrical tris-borylated dihydro-1H-trindene derivative. The B(C6F5)2 borylindenes show fluorescence properties.

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