35815-20-4Relevant academic research and scientific papers
Synthesis of arylcalcium halides - General procedure, scope and limitations
Gaertner, Martin,Goerls, Helmar,Westerhausen, Matthias
, p. 725 - 730 (2008/01/01)
A general procedure for the synthesis of a wide variety of arylcalcium halides by activation of the alkaline earth metal as well as bromo- or iodoarenes is reported. Chloro- and fluoroarenes are not suitable substrates for an insertion of calcium into the carbon-halogen bond. Furthermore, ortho-fluoro substitution prevents the formation of the corresponding heavy calcium organometallics. The ipso-carbon atoms show a strong low-field shift in the 13C NMR spectra. The arylcalcium iodides crystallize monomeric as tetrakis(THF) complexes. Naphthylcalcium iodide shows a Ca-C bond length of 255.2(6) pm which lies in the characteristic region. Georg Thieme Verlag Stuttgart.
A reinvestigation of the reaction of arylcalcium iodides with nitrous oxide
Hanusa, Timothy P.
, p. 2435 - 2436 (2007/10/02)
The previously reported reaction of phenylcalcium iodide with N2O in ether to form products with aryl-N bonds has been reexamined with various solvents and methylated aryliodides. The yield of azobenzene is maximized using DME as the solvent, and the insertion reactions may involve diorganocalcium (Ar2Ca) intermediates.
