Synthesis of aza-m-xylylene diradicals with large singlet-triplet energy gap and statistical analyses of their EPR spectra
We describe synthesis and characterization of a derivative of aza-m-xylylene, diradical 2, that is persistent in solution at room temperature with the half-life measured in minutes (~80-250 s) and in which the triplet ground state is below the lowest sing
Olankitwanit, Arnon,Pink, Maren,Rajca, Suchada,Rajca, Andrzej
Intramolecular cyclization of ortho-alkynylanilines by Rh(I)-catalyzed hydroamination to yield benzo(dipyrroles)
The methylene-bridged Rh(I) dicarbonyl complex, [Rh(bim) (CO)2+ BPh4-] (1) (bim = bis(N-methylimidazol-2-yl)methane), is an effective catalyst for the intramolecular hydroamination of selected ortho-alkynylanilines to give a range of benzo(dipyrroles).
Clentsmith, Guy K.B.,Field, Leslie D.,Messerle, Barbara A.,Shasha, Adelle,Turner, Peter
supporting information; experimental part
p. 1469 - 1471
(2009/06/08)
Cyclization of acetylenic amides using a cationic rhodium(I) complex
The cationic Rh(I) dicarbonyl complex [{Rh(bim)(CO)2} +BPh4-] 1, containing a bidentate bisimidazolylmethane ligand [bim refers to bis(N-methylimidazol-2-yl)methane] acts as a catalyst for the cyclization of alkynyl amides to produce lactams and N-acyl heterocyclic compounds.
Burling, Suzanne,Field, Leslie D.,Li, Hsiu L.,Messerle, Barbara A.,Shasha, Adelle
p. 677 - 680
(2007/10/03)
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