Issue 89, 2017
From the journal:

Chemical Communications

Alkylideneborate zwitterions and C–C coupling by atypical diboration of electron-rich alkynes†‡

Julian Böhnke,ab   Holger Braunschweig, ORCID logo *ab   Andrea Deißenberger,ab   Theresa Dellermann,ab   Rian D. Dewhurst, ORCID logo ab   J. Oscar C. Jiménez-Halla, ORCID logo c   Stephanie Kachel,ab   Hauke Kelchab  and  Dominic Prieschlab  

* Corresponding authors

a Institute for Inorganic Chemistry, Julius-Maximilians-Universität Würzburg, Am Hubland, Germany
E-mail: h.braunschweig@uni-wuerzburg.de

b Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, Germany

c Departamento de Química, Universidad de Guanajuato, Noria Alta S/N, Mexico

Abstract

The combination of electron-rich diaminoalkynes and ditopic Lewis acids diboranes(4) leads to unusual uncatalysed diboration reactions involving internal Lewis adduct, zwitterion, and C–C bond formation. The products are novel multicyclic, charge-separated compounds with intramolecular dative bonds.

Graphical abstract: Alkylideneborate zwitterions and C–C coupling by atypical diboration of electron-rich alkynes

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Article information

DOI
https://doi.org/10.1039/C7CC07409C
Article type
Communication
Submitted
22 Sep 2017
Accepted
10 Oct 2017
First published
11 Oct 2017

Chem. Commun., 2017,53, 12132-12135

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Alkylideneborate zwitterions and C–C coupling by atypical diboration of electron-rich alkynes

J. Böhnke, H. Braunschweig, A. Deißenberger, T. Dellermann, R. D. Dewhurst, J. O. C. Jiménez-Halla, S. Kachel, H. Kelch and D. Prieschl, Chem. Commun., 2017, 53, 12132 DOI: 10.1039/C7CC07409C

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