105590-87-2Relevant academic research and scientific papers
Design, synthesis, and application of enantioselective coupling reagent with a traceless chiral auxiliary
Kolesinska, Beata,Kaminski, Zbigniew J.
supporting information; experimental part, p. 765 - 768 (2009/09/06)
(Chemical Equation Presented) Stable chiral N-triazinylbrucinium tetrafluoroborate enantioselectively activates racemic carboxylic acids yielding enantiomerically enriched amides, esters, and dipeptides with er from 8:92 to 0.5:99.5. Due to the departure
PS-IIDQ: a supported coupling reagent for efficient and general amide bond formation
Valeur, Eric,Bradley, Mark
, p. 8855 - 8871 (2008/02/11)
Polystyrene-IIDQ, a polymer-supported coupling reagent, was synthesized in three steps from Merrifield resin in 86% overall conversion. This reagent efficiently coupled carboxylic acids to amines in good yields and high purities, required no pre-activation step, and was tolerant of the order of reagent addition. PS-IIDQ was observed to be more efficient than polymer-supported carbodiimides (PS-EDC and PS-DCC) and gave higher yields than HATU for general amide bond formation, including the coupling of anilines and hindered substrates. When evaluated with five carboxylic acids and nine amines (including anilines and secondary amines) PS-IIDQ gave an average isolated yield of 73%.
THE CHEMISTRY OF PEPTIDES RELATED TO METABOLITES OF TRICHODERMA SPP. 2. AN IMPROVED METHOD OF CHARACTERIZATION OF PEPTIDES OF 2-METHYLALANINE
Shaw, I. M.,Taylor, A.
, p. 164 - 173 (2007/10/02)
4-Chlorobenzoylazide reacts with amino acid and peptide esters to give the 4-chlorobenzoyl derivatives in 60-90percent yield, at room temperature, without measurable racemization.The reaction also proceeds smoothly with hindered amines such as methyl 2-me
