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Just Published in Chemistry - A European Journal
01/18/2017Facile Access to Unprecedented Electron-Precise Monohydrodiboranes(4), cis-1,2-Dihydrodiboranes(4), and a 1,1-Dihydrodiborane(5)
Authors: Dr. Merle Arrowsmith, Prof. Dr. Holger Braunschweig, Dr. Krzysztof Radacki, Torsten Thiess, Arthur Turkin
Abstract: 2,3-Bis(dimethylamino)-substituted B2N2C2 heterocycles underwent selective dimethylamino/hydride exchange with either one or two equivalents of BH3⋅SMe2 to give the corresponding cyclic monohydrido- or (cis)1,2-dihydridodiboranes(4), respectively. Upon either heating or irradiation in solution, the latter underwent ring contraction to the corresponding five-membered BN2C2 heterocycles, whereas irradiation of the 1,2-dimethylaminoethene-supported 1,2-dihydridodiborane(4) in the presence of PEt3 gave an unprecedented unsymmetrical 1,1-dihydrodiborane(5) phosphine adduct.
Link: http://onlinelibrary.wiley.com/doi/10.1002/chem.201605270/abstract
