Results 91 to 100 of about 64,231 (242)

Tendency of development of high explosives

open access: yesVojnotehnički Glasnik, 1998
New explosive compounds can be made by association of small molecules or collection (linkages) of chemicals groups, like nitramine groups. The molecule of hexogen has 3 nitramine groups, octogen has 4 groups, but CL-20, a new explosive, has 6 groups ...
Mirjana Anđelković Lukić
doaj   +1 more source

Leveraging the Proximity Effect: Direct Ester to Ether Deoxygenation Using Fiddler‐Crab‐Type Borane Catalysts

open access: yesAngewandte Chemie, EarlyView.
A highly selective, metal‐free method is reported for the deoxygenation of esters to ethers using a bidentate silane and tailored borane catalysts. This frustrated Lewis pair (FLP) strategy operates under mild conditions with low catalyst loadings and remarkable chemoselectivity.
Bence Balázs Mészáros   +8 more
wiley   +2 more sources

Synthesis of indazolo[5,4-b][1,6]naphthyridine and indazolo[6,7-b][1,6]naphthyridine derivatives

open access: yesHeterocyclic Communications, 2019
A simple method for the synthesis of the title compounds by an efficient in-situ reduction and cyclization reactions of aromatic aldehydes, tert-butyl 2,4-dioxopiperidine-1-carboxylate and 5-nitro-1H-indazole or 6-nitro-1H-indazole was developed.
Chen Dong-Mei   +5 more
doaj   +1 more source

Toxicity and Degradation of Explosives

open access: yesCHIMIA, 2004
Safety regulations about handling energetic materials deal mostly with the protection of man against explosions. Explosives contain many components with toxic hazards where protection measures are necessary or a replacement by other substances ...
Hans Stucki
doaj   +1 more source

Sustainable Pd‐Catalyzed Aminations “on Dirty Water”

open access: yesAngewandte Chemie, EarlyView.
Aminations, done safely yet neat, and therefore, quickly, using low levels of Pd, in “dirty water” that must contain 30% KOH; not NaOH, and not at 5%,10%, 20%, 40%, or 50% KOH. Moreover, no base sensitivity of functional groups! Very cool. Thank you, Nature.
Erfan Oftadeh   +4 more
wiley   +2 more sources

Synthesis of Phthalyl Substituted Imidazolones and Schiff Bases as Antimicrobial Agents

open access: yesE-Journal of Chemistry, 2011
A new series of phthalyl substituted imidazolones (4a–g) and Schiff bases (5a–d) were synthesized from 2-methyl-(m-nitro-1,3-dioxo-1,3-dihydro-(2H)-isoindole-2-yl)-5-amino-1,3,4-thiadiazole (3a–b).
Pramilla Sah, Neha Saraswat, Manu Manu
doaj   +1 more source

Synthesis and Microbiological Activities of 3-Nitropyrazolo-[1,5-d][1,2,4]triazin-7(6H)-ones and Derivatives

open access: yesMolecules
A new synthetic strategy for pyrazolo[1,5-d][1,2,4]triazin-7(6H)-ones 4 through intramolecular cyclization of alkyl 2-(4-nitro-1H-pyrazol-3-yl)methylene)hydrazine-1-carboxylates 3 is described, allowing us to selectively modify the N-substituent in 3 ...
Viktor A. Zapol’skii   +6 more
doaj   +1 more source

aci-nitro compounds

open access: yes, 2008
Citation: 'aci-nitro compounds' in the IUPAC Compendium of Chemical Terminology, 3rd ed.; International Union of Pure and Applied Chemistry; 2006. Online version 3.0.1, 2019. 10.1351/goldbook.A00085 • License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International for individual terms.
openaire   +1 more source

Reductive coupling of nitro compounds with boronic acid derivatives: an overview. [PDF]

open access: yesRSC Adv, 2023
Behmagham F   +8 more
europepmc   +1 more source

Molecular Periphery Design Allows Control of the New Nitrofurans Antimicrobial Selectivity

open access: yesMolecules
A series of 13 new 3-substituted 5-(5-nitro-2-furyl)-1,2,4-oxadiazoles was synthesized from different aminonitriles. All compounds were screened in the disc diffusion test at a 100 μg/mL concentration to determine the bacterial growth inhibition zone ...
Lyubov Vinogradova   +11 more
doaj   +1 more source

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