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Lewis Acid Chelation of [NR]2- by 2,2‘-Diborabiphenyl:  9,11-Diboratacarbazole Heterocycles

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posted on 2004-06-21, 00:00 authored by Ioan Ghesner, Warren E. Piers, Masood Parvez, Robert McDonald
A new heterocyclic framework, the dianionic 9,11-diboratacarbazole, has been prepared from a bis(trimethylphosphine)-stabilized 2,2‘-diborabiphenyl derivative, 1, and H2NR (R = Ph, CH2C6H4-p-OMe). The heterocyclic framework is formally assembled via Lewis acid chelation of the [NR]2- dianion by 2,2‘-diborabiphenyl. These dianions are isoelectronic with the well-studied fluorenyl monoanion.

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