caa a22 4500 467920028 CHVBK 20180406152914.0 cr unu---uuuuu 170328e20060401xx s 000 0 eng 10.1007/s00706-006-0441-0 doi (NATIONALLICENCE)springer-10.1007/s00706-006-0441-0 Synthesis and Trapping of Some Substituted 1-Bromocyclopropenes [Elektronische Daten] [Karl F. S. Alnes, Leiv K. Sydnes] Summary.: Treatment of a number of 2-substituted 1,1,2-tribromocyclopropanes with MeLi at −78°C gave the corresponding 1-bromocyclopropenes, which were reacted with three cyclic dienes to yield the [4 + 2]-cycloadducts. Cycloaddition with 1,3-diphenylisobenzofuran (DPIBF) gave the exo adducts, in most cases in excellent yield, whereas cyclopentadiene afforded endo adducts only, but in moderate yield. In most reactions with furan no adduct was formed, but two 1-bromocyclopropenes derivatives with an aromatic side chain were exceptions and furnished mixtures of exo and endo adducts in moderate yields. Springer-Verlag/Wien, 2006 Keywords. Cycloadditions nationallicence Small rings nationallicence Organolithium compounds nationallicence Alkynes nationallicence Allenes nationallicence Alnes Karl F. S. Department of Chemistry, University of Bergen, NO-5007, Bergen, Norway aut Sydnes Leiv K. Department of Chemistry, University of Bergen, NO-5007, Bergen, Norway aut Monatshefte für Chemie / Chemical Monthly Springer-Verlag 137/4(2006-04-01), 483-500 0026-9247 137:4<483 2006 137 706 https://doi.org/10.1007/s00706-006-0441-0 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00706-006-0441-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Alnes Karl F. S. Department of Chemistry, University of Bergen, NO-5007, Bergen, Norway aut NATIONALLICENCE 700 1- Sydnes Leiv K. Department of Chemistry, University of Bergen, NO-5007, Bergen, Norway aut NATIONALLICENCE 773 0- Monatshefte für Chemie / Chemical Monthly Springer-Verlag 137/4(2006-04-01), 483-500 0026-9247 137:4<483 2006 137 706 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer