Baird, Mark S.; Hussain, Helmi H.; Nethercott, William, Journal of the Chemical Society. Perkin transactions I, 1986, p. 1845 - 1854
作者:Baird, Mark S.、Hussain, Helmi H.、Nethercott, William
DOI:——
日期:——
Synthesis and Trapping of Some Substituted 1-Bromocyclopropenes
作者:Karl F. S. Alnes、Leiv K. Sydnes
DOI:10.1007/s00706-006-0441-0
日期:2006.4
Treatment of a number of 2-substituted 1,1,2-tribromocyclopropanes with MeLi at -78 degrees 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.
A New and Simple Synthesis of Cyclonon-2-ynone.
作者:Leiv K. Sydnes、Einar Bakstad、Lars Skattebøl、Chris M. Hartshorn、Michael P. Hartshorn、Manuela Merchán、Ward T. Robinson、Björn O. Roos、Claire Vallance、Bryan R. Wood
DOI:10.3891/acta.chem.scand.51-1132
日期:——
BAIRD M. S.; HUSSAIN H. H.; NETHERCOTT W., J. CHEM. SOC. PERKIN TRANS.,(1986) N 10, 1845-1853
作者:BAIRD M. S.、 HUSSAIN H. H.、 NETHERCOTT W.
DOI:——
日期:——
Regio- and Stereoselectivity of Ene Reactions: The Dimerization of Bicyclic 1,3-Fused 2-(Trimethylsilyl)cycloprop-1-enes
作者:Ko Chou Chen、Wen Chieh Wang、Mei-Yun Chen、Wei-Cheng Chen、Ming-Chieh Her、Gon-Ann Lee
DOI:10.1002/ejoc.200600771
日期:2007.2
trimethylsilyl chloride produce 8-(trimethylsilyl)bicyclo[5.1.0]oct-1(8)-ene (4) and 9-(trimethylsilyl)bicyclo[6.1.0]non-1(9)-ene (5). Both 4 and 5 undergo ene dimerization via the same steric isomer and an endo transition state to generate the stable adducts 6 and 7, respectively, as the sole isomers. Compound 6, containing an unstable bicyclo[5.1.0]oct-1(8)-enyl group and produced in high yields, has