Nucleophile-Selective Cross-Coupling Reactions with Vinyl and Alkynyl Bromides on a Dinucleophilic Aromatic Substrate
作者:Lu-Ying He、Mathias Schulz-Senft、Birk Thiedemann、Julian Linshoeft、Paul J. Gates、Anne Staubitz
DOI:10.1002/ejoc.201500138
日期:2015.4
A nucleophile-selective cross-coupling reaction on an aromatic compound bearing two metal groups, Bpin and SnMe3, has been developed. Previously, only aryl bromides and iodides could be used as electrophilic components, but in this work, the scope could be extended to vinyl and alkynyl bromides as electrophiles. This means that the roles typical in Sonogashira couplings or Heck reactions of the aromatic
Synthesis, characterization and electronic properties of some hetero-arylene vinylene oligomers
作者:Johan F.A. Van Der Looy、Gerd J.H. Thys、Pieter E.M. Dieltiens、Daniël De Schrijver、Christian Van Alsenoy、Herman J. Geise
DOI:10.1016/s0040-4020(97)10006-0
日期:1997.11
The synthesis and characterization is reported of six 2,5-distyryl-heteroarylenes (BXB compounds) and 1,4-bis2-(heteroaryl-2-yl) ethenyl}benzenes (XBX compounds) containing the thienyl, furanyl or N-methylpyrryl as the heteroarylene moiety. By means of NMR and UV/Vis spectroscopy the electronic structure was probed. Quantum mechanical calculations using the semiempirical CNDO/S-CI approach rationalize