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Book Review: The Weak Hydrogen Bond - In Structural Chemistry and Biology. Gautam Desiraju and Thomas Steiner
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Trifluoroethyl phenyl iodonium triflate: Modified preparation and N-trifluoroethylation of amino alcohols
No full textThe title iodinane 3 (Umemoto's FMITS-1) is prepared in two steps from the readily accessible CF3CH2ICl2 (1). 1 and 2 eq. of CF3COOAg react in CFCl2CF2Cl (FC 113) to give CF3CH2(OCOCF3)2 (2) which is converted into 3 by the known method. With this modification, chlorine and nontoxic FC 113 replace 60–80% H2O2 and trifluoroacetic anhydride as the oxidant and the solvent, respectively, in the synthesis of the intermediate 2. The N-trifluoroethylation of some aminoalcohols by FMITS-1 is also reported
Metal-bound halogen atoms in crystal engineering
No full textIn this viewpoint article we discuss an early contribution from Brammer and Orpen et al., which highlights the very rich supramolecular behaviour of halogen atoms. Their findings appear even more timely when viewed in light of the recently proposed IUPAC definition of the halogen bond
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