Results 21 to 30 of about 4,314 (255)

Syntheses, transformations and applications of aminonaphthol derivatives prepared via modified Mannich reactions [PDF]

open access: yes, 2013
A special alteration is the three-component modi fi ed Mannich reaction (mMR), in which formaldehyde is replaced by an aromatic aldehyde, the secondary amine by ammonia, and the C e H acid by an electron-rich aromatic compound such as 1- or 2 ...
Fülöp, Ferenc, Szatmári, István
core   +1 more source

Durable Etched Silicon Powder‐Supported Palladium Catalyst for Continuous Flow Hydrogenation and Reductive Alkylation

open access: yesChemistry–Methods, EarlyView.
Etched silicon powder‐supported Pd is developed as a durable and efficient catalyst for continuous flow hydrogenation and reductive alkylation. This study develops a novel heterogeneous palladium catalyst immobilized on etched silicon powder, demonstrating high efficiency and long‐term stability under continuous flow conditions.
Zhenzhong Zhang   +4 more
wiley   +1 more source

Nuovi derivati chinossalinici inibitori della Diidrofolato Reduttasi (DHFR) e della Timidilato Sintetasi (TS) della Leishmania major: risultati preliminari [PDF]

open access: yes, 2004
L’incidenza delle malattie protozoarie imputate al genere Leishmania è aumentata enormemente con la diffusione dell’AIDS. In particolare la forma viscerale della Leishmaniosi sta emergendo come malattia nuova e sempre più frequente.
Carta, Antonio   +5 more
core  

Synthesis of Bioactive Nitrogen-Containing Heterocycles via Aryne Methodologies [PDF]

open access: yes, 2012
The six chapters of this dissertation exemplify the application of aryne chemistry in medicinally-relevant, nitrogen-containing heterocycle synthesis. The arynes discussed in this dissertation are generated from Kobayashi\u27s aryne precursors that leads
Fang, Yuesi
core   +3 more sources

MICROBIOLOGICAL ASSAYS FOR p-AMINOBENZOIC ACID [PDF]

open access: yesJournal of Biological Chemistry, 1943
We have developed in this laboratory a microbiological assay for p-aminobenzoic acid, using a mutant strain of Neurospora crassa(1) very generously supplied to us by Dr. G.W. Beadle of Stanford University.
Mitchell, Herschel K.   +2 more
openaire   +2 more sources

Lineage labeling with zebrafish hand2 Cre and CreERT2 recombinase CRISPR knock‐ins

open access: yesDevelopmental Dynamics, EarlyView.
Abstract Background The ability to generate endogenous Cre recombinase drivers using CRISPR‐Cas9 knock‐in technology allows lineage tracing, cell type‐specific gene studies, and in vivo validation of inferred developmental trajectories from phenotypic and gene expression analyses. This report describes endogenous zebrafish hand2 Cre and CreERT2 drivers
Zhitao Ming   +14 more
wiley   +1 more source

Liquid secondary ion mass spectrometry analysis of permethylated, n-Hexylamine derivatized oligosaccharides. Application to baculovirus expressed mouse interleukin-3 [PDF]

open access: yes, 1992
Reductive amination with n-hexylamine followed by permethylation was used as a procedure for the liquid secondary ion mass spectrometry (LSIMS) analysis of Asn-linked oligosaccharides.
Arbogast, Brian   +2 more
core   +1 more source

A Systematic Review of Synthetic and Anticancer and Antimicrobial Activity of Quinazoline/Quinazolin‐4‐one Analogues

open access: yesChemistryOpen, EarlyView.
Quinazoline represents an important class of heterocycles with diverse medicinal and pharmacological significance. This review systematically examines scholarly efforts toward understanding different synthetic pathways emphasizing the role of metal and non‐metal catalysts including some miscellaneous reagents employed in the synthesis of quinazoline ...
Neha Manhas   +4 more
wiley   +1 more source

Preparation and spectra of m-nitrobenzoates and m-aminobenzoates [PDF]

open access: yes, 1953
A study of the synthesis of a series of new m-nitrobenzoates, m-aminobenzoates and several derivatives of the latter is presented. Physisal constants and analytical determinations are presented, including the ultraviolet absorption spectra of the ...
Kapsamalis, Peter Tikey
core   +1 more source

Materiais de poliuretanos e terras raras: uma revisão [PDF]

open access: yes, 2023
Polyurethanes are polymers produced from polyols and isocyanates. Commonly, aiming to modify physicochemical properties of the resulting material, other chemical species can be introduced in the polymeric structure, modifying its mechanical, thermal and ...
Alves, Lucas Repecka   +6 more
core   +2 more sources

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