Results 31 to 40 of about 227,214 (300)

One-Pot Sequence of Staudinger/aza-Wittig/Castagnoli–Cushman Reactions Provides Facile Access to Novel Natural-like Polycyclic Ring Systems

Molecules, 2022
Realization of the one-pot Staudinger/aza-Wittig/Castagnoli–Cushman reaction sequence for a series of azido aldehydes and homophthalic anhydrides is described. The reaction proceeded at room temperature and delivered novel polyheterocycles related to the
Rodion Lebedev, Dmitry Dar’in, Grigory Kantin, Olga Bakulina, Mikhail Krasavin   +4 more
doaj   +1 more source

[(2-Chlorophenyl)-(4-fluorophenyl)methylene]-(4-fluorophenyl)amine

Molbank
The formation of a N,1,1-triaryl imine derived from (2-chlorophenyl)-bis-(4-fluorophenyl)methanol is reported. The title compound is formed from a consecutive process which involves a nucleophilic substitution and subsequent Schmidt reaction.
Salvador Vilchis-Valdés, Alberto Cedillo-Cruz, Marco A. García-Eleno, Diego Martínez-Otero, Erick Cuevas-Yañez   +4 more
doaj   +1 more source

Synthesis of alpha-tetrasubstituted triazoles by copper-catalyzed silyl deprotection/azide cycloaddition

Beilstein Journal of Organic Chemistry, 2015
Propargylamines are popular substrates for triazole formation, but tetrasubstituted variants have required multistep syntheses involving stoichiometric amounts of metal.
Zachary L. Palchak, Paula T. Nguyen, Catharine H. Larsen   +2 more
doaj   +1 more source

Anomeric O-Functionalization of Carbohydrates for Chemical Conjugation to Vaccine Constructs. [PDF]

, 2018
Carbohydrates mediate a wide range of biological interactions, and understanding these processes benefits the development of new therapeutics. Isolating sufficient quantities of glycoconjugates from biological samples remains a significant challenge ...
Gervay-Hague, Jacquelyn, Hsieh, Hsiao-Wu, Park, Simon S   +2 more
core   +1 more source

Thiophene-2-carbonyl azide [PDF]

Acta Crystallographica Section E Structure Reports Online, 2013
The title compound, C5H3N3OS, is almost planar (r.m.s. deviation for the ten non-H atoms = 0.018 Å) and forms an extended layer structure in the (100) plane, held together via hydrogen-bonding inter-actions between adjacent mol-ecules. Of particular note is the occurrence of RC-H⋯N(-)=N(+)=NR inter-actions between an aromatic C-H group and an azide ...
Michael Findlater, David B. Cordes, Laci M. Singer, Gene C. Hsu   +3 more
openaire   +3 more sources

Surface modification of UV Cured epoxy resins by click Chemistry

, 2010
A novel method for surface modification of UV-cured epoxy network was described. Photoinitiated cationic copolymerization of a bisepoxide, namely 3,4-epoxy cyclohexylmethyl 3,4-epoxycyclohexanecarboxylate (EEC) with epibromohydrine (EBH) by using a ...
Abadie, Adamson, Ak, Boey, Chandran, Chen, Collman, Dag, Decker, Decker, Decker, Dufour, Durmaz, Erbil, Ergin, Gacal, Gacal, Gao, Haensch, Haensch, Haensch, Karagoz, Kim, Kiskan, Kolb, Kukut, Li, Lummerstorfer, Lutz, Nagai, Nakajima, Opsteen, Parrish, Ranjan, Rengifo, Sangermano, Sangermano, Schlegel, Sun, Takimoto, Tasdelen, Tornoe, Tsarevsky, Tsarevsky, Wang, Yagci, Yagci, Yagci   +47 more
core   +1 more source

Revealing nascent proteomics in signaling pathways and cell differentiation. [PDF]

, 2018
Regulation of gene expression at the level of protein synthesis is a crucial element in driving how the genetic landscape is expressed. However, we are still limited in technologies that can quantitatively capture the immediate proteomic changes that ...
Burlingame, Alma L, Chalkley, Robert J, Forester, Craig M, Oses-Prieto, Juan A, Phillips, Nancy J, Ruggero, Davide, Urisman, Anatoly, Zhang, Li, Zhao, Qian   +8 more
core   +1 more source

Salivary Hydrogen Sulfide Measured with a New Highly Sensitive Self-Immolative Coumarin-Based Fluorescent Probe

Molecules, 2018
Ample evidence suggests that H2S is an important biological mediator, produced by endogenous enzymes and microbiota. So far, several techniques including colorimetric methods, electrochemical analysis and sulfide precipitation have been developed for H2S
Ewelina Zaorska, Marek Konop, Ryszard Ostaszewski, Dominik Koszelewski, Marcin Ufnal   +4 more
doaj   +1 more source

2-Azido-N-(4-methylphenyl)acetamide

IUCrData, 2022
The asymmetric unit of the title compound, C9H10N4O, comprises three independent molecules, two pairs of which differ significantly in the rotational orientation of the azido group and one pair having very similar conformations; the N—N—C—C torsion ...
Mohcine Missioui, Walid Guerrab, Abdulsalam Alsubari, Joel T. Mague, Youssef Ramli   +4 more
doaj   +1 more source

Effect of chloride on the chemical conversion of nitrate to nitrous oxide for δ15N analysis [PDF]

, 2009
We investigate the influence of chloride concentration on the performance of the chemical reduction method for measurement of the nitrogen isotopic ratio (δ15N) in NO3− in natural waters (McIlvin and Altabet, 2005).
Altabet, Mark A., Ryabenko, Evgeniya, Wallace, Douglas W.R.   +2 more
core   +1 more source