Concise Asymmetric Synthesis of β-Trifluoromethylated α,β-Diamino Esters through Addition Reactions of Glycine Esters to CF<sub>3</sub>-Sulfinylimine
作者:Chen Xie、Haibo Mei、Lingmin Wu、Vadim A. Soloshonok、Jianlin Han、Yi Pan
DOI:10.1002/ejoc.201301377
日期:2014.3
the reactions are conducted under operationally convenient conditions (Cs2CO3-catalyzed, ambient temperature) to provide the most advanced, general, and scalable access to biologically important β-trifluoromethylated α,β-diaminoacids.
New greenfluorescentprotein (GFP) chromophoreanalogues, namely 4-(diarylmethylene)imidazolinones (DAINs), were readily synthesized under weakly acidic conditions using a novel condensation reaction between methyl imidate (or thioimidate) and ethyl N-(diarylmethylene)glycinate. DAINs showed notable fluorescence properties. Although they were nearly non-fluorescent in the solution, visible emissions