Results 1 to 10 of about 24,929 (273)

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

Organic Letters, 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. A linear correlation between the results of photophysical experiments and time dependent density functional theory ...
Palazzo, Teresa A, Patra, Digambara, Yang, Joung S, Khoury, Elsy El, Appleton, Mackenzie G, Haddadin, Makhluf J, Tantillo, Dean J, Kurth, Mark J   +7 more
core   +9 more sources

A BNAlP-heterocycle

Chemical Communications
Combining a phosphaalumene with its lighter congener, an iminoborane afforded a species with a BNAlP heterocycle.
Tim Wellnitz, Leonie Wüst, Holger Braunschweig, Christian Hering-Junghans   +3 more
openaire   +4 more sources

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

Molecules, 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, Karolina Kamińska, Elżbieta Wojaczyńska   +2 more
doaj   +1 more source

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

Molbank, 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, Stanislav Andreev, Dieter Schollmeyer, Pierre Koch   +3 more
doaj   +1 more source

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

Molbank, 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, Panayiotis A. Koutentis   +1 more
doaj   +1 more source

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

Molbank, 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, Andreas S. Kalogirou, Andreas Kourtellaris, Panayiotis A. Koutentis   +3 more
doaj   +1 more source

Heterocyclic Electrochemistry: Renewable Electricity in the Construction of Heterocycles

ACS Omega, 2023
Numerous applications in the realm of biological exploration and drug synthesis can be found in heterocyclic chemistry, which is a vast subject. Many efforts have been developed to further improve the reaction conditions to access this interesting family to prevent employing hazardous ingredients.
Samina Aslam, Najoua Sbei, Sadia Rani, Manal Saad, Aroog Fatima, Nisar Ahmed   +5 more
openaire   +4 more sources

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

, 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), Mark J. Kurth (1328874), James C. Fettinger (1312290), Teresa A. Palazzo (1916200), Dean J. Tantillo (1312941), Timothy P. Hartley (1968730)   +5 more
core   +5 more sources

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

Molbank, 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, Panayiotis A. Koutentis   +1 more
doaj   +1 more source

6,10-Dichloro-1-oxa-4,8-dithia-7,9-diazaspiro[4.5]deca-6,9-diene

Molbank, 2022
Reaction of 3,4,4,5-tetrachloro-4H-1,2,6-thiadiazine with 2-mercaptoethan-1-ol (1 equiv.) gave 6,10-dichloro-1-oxa-4,8-dithia-7,9-diazaspiro[4.5]deca-6,9-diene in 12% yield. The compound was fully characterized.
Andreas S. Kalogirou, Panayiotis A. Koutentis   +1 more
doaj   +1 more source