Herein, we design and synthesize two highly crystalline and stable 2,4,6-collidine-derived vinylene-linked 2D COFs. Both COFs can act as efficient photocatalysts to facilitate visible-light-driven aerobic oxidation. The TM-TBT-COF was observed to exhibit superior activity and recyclability owing to...
Synthesis products, including acetonitrile (CH3CN), dimethylformamide (DMF), N,N′-diisopropylcarbodiimide (DIC), tri-isopropylsilane (TIS), trifluoroacetic acid (TFA), sym-collidine, diethyl-ether, and diisopropylethylamine (DIPEA), piperidine, were from Sigma-Aldrich (Milan, Italy). Peptides ...
Starting with the use of NBS78 to activate armed thioglycosides, much progress has been made in utilizing bromonium and iodonium salts for the activation process with promoters like NOBF4,79 NBS/TfOH,80 Br2/AgOTf,81 NIS/HOTf or AgOTf,82 IDCP (iodoniumdicollidine perchlorate),83 IDCT (...
Based on this mechanistic understanding, we explored the decarboxylative C(sp3)–N cross-coupling between BCP-derived carboxylic acid1aandp-toluidine2a(Fig.2b). After extensive evaluation of the reaction parameters, we identified the optimal reaction conditions—simultaneous electrolysis and violet light-...
All solvents and chemicals were used without any further purification and purchased as peptide grade when available. N-methylpyrrolidinone was purchased from Biosolve. Diisopropylcarbodiimide and collidine were purchased from Sigma. The following L-amino acids were used: Fmoc-Ala, Fmoc-Arg(pbf)-OH...
New cyanato copper complexes of the type Cu(NCO) 2 L 2 have been prepared, where L represents α-, β- or γ-picoline, 2.4-lutidine, 2.6-lutidine or 2.4.6-collidine. In a further series of complexes, Cu(NCO) 2 L, L represents α-pi... J Kohout,M Quastlerová-Hvastijová,M ...
As Et3N was revealed as the only successful base, other nitrogen-containing organic bases such as morpholine, piperidine, collidine, lutidine, 1,4-diazabicyclo[2.2.2]octane (DABCO), and 1,8-diazabicyclo(5.4.0)undec-7-ene (DBU), featuring a range of pKa between 8.6 and 13.1, did not ...
(Benzotriazol-1-yl)-N,N,N′,N′-tetramethyluronium hexafluorophosphate) activator, collidine activator base and 5% piperazine for deprotection. Fluorescein and biotin tags were incorporated during synthesis at the N-terminus of the sequence. Cleavage using a 95% TFA Trifluoro acetic acid followed ...
1-ephenamine, N-ethylpiperidine, N-benzyl-β-phenethylamine, dehydroabietylamine, N,N'-bisdehydro-abietylamine, ethylenediamine, or bases of the pyridine type such as pyridine, collidine or quinoline, or other amines which have been used to form salts with known penicillins and cephalosporins. ...
Assessing the acid properties of desilicated ZSM-5 by FTIR using CO and 2,4,6-trimethylpyridine (collidine) as molecular probes A series of desilicated ZSM-5 catalysts previously shown to have improved catalytic performance in the MTG (methanol-to-gasoline) reaction [M. Bjrgen, F. J......