Arylallenes and the halogeno-B(C6 F5 )2 reagents: facile formation of 2-borylindenes

Chemical Communications : Chem Comm
Xin TaoGerhard Erker

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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Citations

May 7, 2021·Chemical Communications : Chem Comm·Max HasenbeckUrs Gellrich
Jun 19, 2021·Chemistry : a European Journal·Callum R WoofRuth L Webster

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Methods Mentioned

BETA
X-ray
NMR

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