42239-18-9

Upstream product

• 881-86-7 dimethyl 2,5-pyridine dicarboxylate 
• 5552-44-3 ethyl 2,5-pyridinedicarboxylate 
• 100-26-5 Pyridine-2,5-dicarboxylic acid 
• 5620-35-9 pyridine-2,5-dicarboxylic acid dichloride 
• 21514-99-8 2,5-bis[hydroxymethyl]-pyridine 

Downstream Products

• 1375006-73-7 5-(azidomethyl)-2-((4-(4-nitrophenyl)-1H-1,2,3-triazol-1-yl)methyl)pyridine 
• 1375006-81-7 (1-((6-((4-(4-nitrophenyl)-1H-1,2,3-triazol-1-yl)methyl)pyridin-3-yl)methyl)-1H-1,2,3-triazol-4-yl)methanol 
• 1375006-82-8 (1-((5-((4-(4-nitrophenyl)-1H-1,2,3-triazol-1-yl)methyl)pyridin-2-yl)methyl)-1H-1,2,3-triazol-4-yl)methanol 
• 1375006-83-9 5-((4-butyl-1H-1,2,3-triazol-1-yl)methyl)-2-((4-(4-nitrophenyl)-1H-1,2,3-triazol-1-yl)methyl)pyridine 
• 1375006-84-0 5-((4-butyl-1H-1,2,3-triazol-1-yl)methyl)-2-((4-(p-tolyl)-1H-1,2,3-triazol-1-yl)methyl)pyridine 
• 37877-95-5 [2](1,4)benzeno[2](2,5)pyridinophane 
• 100994-20-5 6,14-Diaza-tricyclo[10.2.2.2^5,8]octadeca-1⁽¹⁴⁾,5⁽¹⁸⁾,6,8⁽¹⁷⁾,12,15-hexaene 
• 100994-22-7 6,13-Diaza-tricyclo[10.2.2.2^5,8]octadeca-1⁽¹⁴⁾,5⁽¹⁸⁾,6,8⁽¹⁷⁾,12,15-hexaene 

Relevant academic research and scientific papers

UMSYMMETRICAL BISAZIDES FOR CHEMOSELECTIVE SEQUENTIAL LIGATION

Unsymmetrical bisazides containing chelating and non-chelating azido groups undergo chemoselective three-component copper(I)-catalyzed azide-alkyne conjugation reactions with two different alkyne molecules. In conjunction with the reactivity gap between a

Synthesis of planar chiral N-heterocyclic-substituted pyridinophanes

Four new planar chiral N-heterocyclic-substituted [2](1,4)benzene[2](2,5) pyridinophanes have been synthesized. With the attached pyrazole, triazole, tetrazole, and pyrimidine moieties, different N,N-chelating ligands that vary in the number of enclosed nitrogen atoms, ring size, and electronic properties were added to a mostly neglected class of pyridinophanes. Additionally, the known synthesis of the pyridinophane scaffold was simplified considerably. With the acetyl, amino, and amido pyridinophane, various useful intermediates for new pyridinophane ligands were synthesized, which would allow for further investigations of this ligand system. New planar chiral bis(heterocyclic) N-donors based on the rarely investigated class of [2](1,4)-benzene[2](2,5) pyridinophanes were synthesized. The synthesis of the pyridinophane scaffold was simplified, and a pyrazole, triazole, tetrazole, and pyrimidine heterocycle were successfully attached to the planar chiral backbone. Copyright

Chemoselective sequential "click" ligation using unsymmetrical bisazides

Unsymmetrical bisazides containing chelating and nonchelating azido groups undergo chemoselective three-component copper(I)-catalyzed azide-alkyne conjugation reactions with two different alkyne molecules. In conjunction with the reactivity gap between ar

A new planar chiral bipyridine ligand

Combined methods of cyclophane and bipyridine synthesis open the way to the new planar-chiral 2,2'-bipyridine 1, whose CD spectrum is strongly dependent on metal salts. The absolute configuration of the chiral precursor 2 could be assigned by comparison of experimental and theoretical CD spectra. The usefulness of planar chirality in heterocyclic transition metal ligands is revealed in experiments towards stereoselective catalysis using 1.