4-(4,6-Dimethoxy-1,3,5-triazin-2-yl)-4-methylmorpholinium Toluene-4-sulfonate (DMT/NMM/TsO<sup>−</sup>
) Universal Coupling Reagent for Synthesis in Solution
作者:Justyna Fraczyk、Zbigniew J. Kaminski、Joanna Katarzynska、Beata Kolesinska
DOI:10.1002/hlca.201700187
日期:2018.1
environmentally‐friendly N‐triazinylammonium family of sulfonates, has been found to be a very effective coupling reagent for the synthesis of amides, esters and peptides in solution. This study confirms the usefulness of DMT/NMM/TsO− for peptidesynthesis in solution, starting from Z‐, Fmoc‐, and Boc‐protected substrates as well as unnatural building blocks. Peptidesynthesis with DMT/NMM/TsO− produced
Bis(4,6-dimethoxy-1,3,5-triazin-2-yl) Ether as Coupling Reagent for Peptide Synthesis
作者:Konrad Jastrzabek、Przemyslaw Bednarek、Beata Kolesinska、Zbigniew J. Kaminski
DOI:10.1002/cbdv.201200369
日期:2013.5
4‐diazabicyclo[2.2.2]octane (DABCO) to yield, under mild reaction conditions, superactive triazine esters. Versatility of this new couplingreagent was confirmed by condensation of lipophilic and sterically hindered carboxylic acids with amines in 71–98% yield, and by synthesis of peptides, including those containing Aib‐Aib sequence, in solution with high yield and high enantiomeric purity.
of structurally diverse amides with amines based on the use of molecular oxygen as palladium-activating agent. The reaction, which is scalable and amenable for the preparation of enantioenriched compounds, is carried out in a bio-degradable solvent often used as a fuel additive, diethyl carbonate. As a result of the 10−4 mol% of catalyst required, final products are isolated containing palladium impurities