General Characteristics In order to tame the basicity and the high reactivity of amines during multi-step synthesis, it is common to protect them with electron-withdrawing functional groups. ...
Monthly Archives: March 2014
A Concerted Transfer Hydrogenolysis: 1,3,2-Diazaphospholene-Catalyzed Hydrogenation of N=N Bond with Ammonia–Borane
Chong, C.-C.; Hirao, H.; Kinjo, R. Angew. Chem. Int. Ed. 53, 2014. Early View DOI: 10.1002/anie.201400099 1,3,2-diazaphospholenes catalyze metal-free transfer hydrogenation of a NN double bond using ...
Low Coordinate Germanium(II) and Tin(II) Hydride Complexes: Efficient Catalysts for the Hydroboration of Carbonyl Compounds
Hadlington, T. J.; Hermann, M.; Frenking, G.; Jones, C. J. Am. Chem. Soc. 136, 2014. 136, 3028. DOI: 10.1021/ja5006477 This study details the first use of well-defined low-valent p-block metal ...
Acetal Protective Groups
General Characteristics Alcohols can be protected as acetals against reductive and basic conditions. Oxygen-based acetals are also stable under oxidizing conditions. Deprotection is usually done ...
Stable GaX2, InX2 and TlX2 radicals
Protchenko, A. V.; Dange, D.; Harmer, J. R.; Tang, C. Y.; Schwarz, A. D.; Kelly, M. J.; Phillips, N.; Tirfoin, R.; Birjkumar, K. H.; Jones, C.; Kaltsoyannis, N.; Mountford. P; Aldridge, S. Nat. ...
Dismutational and Global-Minimum Isomers of Heavier 1,4-Dimetallatetrasilabenzenes of Group 14
Jana, A.; Huch, V.; Repisky, M.; Berger, R. J. F.; Scheschkewitz, D. Angew. Chem. Int. Ed., 2014. Early View DOI: 10.1002/anie.201310475 Aromatic species with heavier Group 14 elements show ...
Isolation of Bridging and Terminal Coinage Metal−Nitrene Complexes
Dielmann, F.; Andrada, D. M.; Frenking, G.; Bertrand, G. J. Am. Chem. Soc., 2014. 136, 3800. DOI: 10.1021/ja5007355 Transition metal complexes featuring a metal−nitrogen multiple bond have been ...
Arsa-Diazonium Salts with an Arsenic–Nitrogen Triple Bond
Kuprat, M.; Schulz, A.; Villinger, A. Angew. Chem. Int. Ed. 52, 2013. 7126 – 7130. DOI: 10.1002/anie.201302725 Arsa-diazonium salts containing a cation with an arsenic–nitrogen triple bond ...
Coordination Complexes of Ph3Sb2+ and Ph3Bi2+: Beyond Pnictonium Cations
Robertson, A. P. M.; Burford, N.; McDonald, R.; Ferguson, M. J. Angew. Chem. Int. Ed. 53, 2014. Early View. DOI: 10.1002/anie.201310613 The syntheses of salts containing ligand-stabilized Ph3Sb2+ and ...
Olefin Metathesis
General Characteristics In the presence of a metal alkylidene catalyst, two olefins combine and redistribute their fragments to give a new pair of olefins. Olefin metathesis is fundamentally an ...