novel, tau-selective smart near-infrared fluorescence (NIRF) probe was attempted by combining the previously identified core scaffold 3,5-dimethoxy-N,N-dimethylaniline-4-yl moiety, with the characteristic donor-π-acceptor architecture of the smart NIRF Aβ probes DANIR-2c and MCAAD-3. A series of compounds (2 and 3) were prepared, which were identified as “turn-on” NIRF probes for the visual detection
Synthese totale de deux ethoxycarbonyl-4 cephemes fonctionnalises ou non en position 7 par un groupement phtalimido
作者:A. Reliquet、J.C. Meslin、F. Reliquet、H. Quiniou
DOI:10.1016/s0040-4020(01)85890-7
日期:1988.1
The totalsynthesis of two 4-ethoxycarbonyl cephems is described. For one of these, an amino group at the 7 position, protected as a phtalimido, is introduced. This modification provides a structure which closely resembles that of biologically active cephalosporins.
Palladium‐Catalyzed Direct Carbonylation of Bromoacetonitrile to Synthesize 2‐Cyano‐
<i>N</i>
‐acetamide and 2‐Cyanoacetate Compounds
作者:Zhi‐Peng Bao、Xiao‐Feng Wu
DOI:10.1002/anie.202301671
日期:——
A new and convenientpalladium-catalyzed carbonylative procedure of bromoacetonitrile has been developed. A variety of valuable 2-cyano-N-acetamide and 2-cyanoacetate compounds were obtained in good to excellent yields under mild reaction conditions. Furthermore, this transformation can be carried out under atmospheric pressure and provides an alternative route to 7 drug compounds.