Results 11 to 20 of about 28,367 (257)

The Synergy of Macrocycles and Heterocycles: A Review of Coordination Behavior, Sensing, and Functional Materials Based on Calixarenes [PDF]

open access: yesMolecules
Heterocycle-containing calixarenes have attracted increasing attention over the past three decades owing to the unique combination of the preorganized macrocyclic framework of calixarenes with the structural and functional diversity of heterocyclic ...
Valeriy Kalinin   +2 more
doaj   +2 more sources

A BNAlP-heterocycle

open access: yesChemical Communications
Combining a phosphaalumene with its lighter congener, an iminoborane afforded a species with a BNAlP heterocycle.
Tim Wellnitz   +3 more
openaire   +4 more sources

Dibenzonaphthyridinones: Heterocycle-to-Heterocycle Synthetic Strategies and Photophysical Studies [PDF]

open access: yes, 2015
A heterocycle-to-heterocycle strategy is presented for the preparation of highly fluorescent and solvatochromic dibenzo­naph­thyridinones (DBNs) via methodology that leads to the formation of a tertiary, spiro-fused carbon center.
Digambara Patra (1470592)   +7 more
core   +4 more sources

Heterocycle–Heterocycle Strategies: (2-Nitrophenyl)isoxazole Precursors to 4‑Aminoquinolines, 1H‑Indoles, and Quinolin-4(1H)‑ones

open access: yes, 2016
Reductive heterocycle–heterocycle (heterocycle → heterocycle; H–H) transformations that give 4-aminoquinolines, 3-acylindoles, and quinolin-4(1H)-ones from 2-nitrophenyl substituted isoxazoles are reported. When this methodology is applied to 3,5-, 4,5-,
Keith C. Coffman (1968733)   +5 more
core   +5 more sources

Application of Polyamines and Amino Acid Derivatives Based on 2-Azabicycloalkane Backbone in Enantioselective Aldol Reaction

open access: yesMolecules, 2021
Carbon–carbon bond forming reactions, such as aldol reaction and condensation, belong to extremely desired transformations as manifested by >25,000 entries in SciFinder.
Dominika Iwan   +2 more
doaj   +1 more source

12H-Dibenzo[d,g][1,2,3]triselenocin-12-ol

open access: yesMolbank, 2022
Reaction of diphenylmethanol (4) with n-butyllithium and subsequent treatment with selenium resulted in 12H-dibenzo[d,g][1,2,3]triselenocin-12-ol (5) comprising a novel heterocyclic ring system.
Marko Boskovic   +3 more
doaj   +1 more source

Thermal Stability of N-Heterocycle-Stabilized Iodanes – A Systematic Investigation [PDF]

open access: yes, 2019
The thermal stability of pseudocyclic and cyclic N-heterocycle-stabilized (hydroxy)aryl- and mesityl(aryl)-l3-iodanes (NHIs) through thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC) is investigated.
Yulia A. Vlasenko (7008922)   +4 more
core   +3 more sources

Reactions of 4H-1,2,6-Thiadiazine Sulfides

open access: yesMolbank, 2022
3,5-Dichloro-4H-1,2,6-thiadiazin-4-one reacts with benzo[d]thiazole-2-thiol (1 equiv) and triethylamine (1 equiv) to give 3-(benzo[d]thiazol-2-ylthio)-5-chloro-4H-1,2,6-thiadiazin-4-one in 71% yield.
Andreas S. Kalogirou   +1 more
doaj   +1 more source

Reaction of 4,5-Dichloro-1,2,3-dithiazolium Chloride with 2-(Phenylsulfonyl)acetonitrile

open access: yesMolbank, 2022
The reaction of 4,5-dichloro-1,2,3-dithiazolium chloride with 2-(phenylsulfonyl)acetonitrile (1 equiv) in the presence of pyridine (2 equiv) gave S-(3-chloro-5-cyanoisothiazol-4-yl)benzenesulfonothioate and (Z)-2-(4-chloro-5H-1,2,3-dithiazol-5-ylidene)-2-
Konstantinos Plakas   +3 more
doaj   +1 more source

2-Amino-5-chloro-1H-pyrrole-3,4-dicarbonitrile

open access: yesMolbank, 2021
The reaction of tetracyanoethylene (TCNE) with HCl (g) in the presence of Sn (1 equiv) and AcOH resulted in 2-amino-5-chloro-1H-pyrrole-3,4-dicarbonitrile in a 74% yield. The compound was fully characterized.
Andreas S. Kalogirou   +1 more
doaj   +1 more source

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