By Douglas W. Stephan (auth.), Gerhard Erker, Douglas W. Stephan (eds.)

Discovery of annoyed Lewis Pairs: Intermolecular FLPs for Activation of Small Molecules, by means of Douglas W. Stephan Intramolecular pissed off Lewis Pairs: Formation and Chemical positive factors, through Gerald Kehr, Sina Schwendemann, Gerhard Erker pissed off Lewis Pair Mediated Hydrogenations, by means of Douglas W. Stephan, Gerhard Erker Amine-Borane Mediated Metal-Free Hydrogen Activation and Catalytic Hydrogenation, by way of Victor Sumerin, Konstantin Chernichenko, Felix Schulz, Markku Leskelä, Bernhard Rieger, Timo Repo Hydrogen Activation by way of annoyed Lewis Pairs: Insights from Computational experiences, through Tibor András Rokob, Imre Pápai Quantum Chemistry of FLPs and Their Activation of Small Molecules: Methodological facets, via Birgitta Schirmer, Stefan Grimme Computational layout of Metal-Free Molecules for Activation of Small Molecules, Hydrogenation, and Hydroamination, via Zhi-Xiang Wang, Lili Zhao, Gang Lu, Haixia Li, Fang Huang Computational reports of Lewis Acidity and Basicity in annoyed Lewis Pairs, through Thomas M. Gilbert Solid-State NMR as a Spectroscopic software for Characterizing Phosphane - Borane pissed off Lewis Pairs, by way of Thomas Wiegand, Hellmut Eckert, Stefan Grimme

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6 Conclusions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46 47 55 63 74 76 77 G. Kehr, S. Schwendemann, and G. Erker (*) Organisch-Chemisches Institut der Universita¨t Mu¨nster, Corrensstr.

For that purpose we treated the conjugated ynone 8a with the zwitterionic H2-activation product 4a. We observed a rapid transfer of the H+/HÀ pair at room temperature with formation of the cis-enone cis-9. Unfortunately, in this case the liberated FLP 3a reacted faster with the ynone substrate 8a to give 10a (Scheme 3). As a result, this FLP induced hydrogenation of the electron-poor carbon–carbon triple bond in 8a remained stoichiometric [39]. We prepared a variety of analogs of the ethylene-bridged P/B FLP 3a by hydroboration of a series of substituted dimesitylalkenylphosphanes with [HB (C6F5)2].

J Phys Chem A 103:9116 81. Tarakeshwar P, Lee SJ, Lee JY, Kim KS (1999) Ab initio study of benzene-BX3 (X ¼ H, F, Cl) interactions. J Phys Chem B 103:184 82. Zhao X, Stephan DW (2012) Frustrated Lewis pair olefin addition reactions: P-, N-, C- and Hbased nucleophilic additions to an olefin tethered to borane. Chem Sci 3:2123 83. Dureen MA, Stephan DW (2009) Terminal alkyne activation by frustrated and classical Lewis acid/phosphine pairs. J Am Chem Soc 131:8396 84. Dureen MA, Brown CC, Stephan DW (2010) Addition of enamines or pyrroles and B(C6F5)3 “frustrated Lewis pairs” to alkynes.

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