Results 1 to 10 of about 18,059 (119)

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

Molecules
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, Pavel Padnya, Ivan Stoikov   +2 more
doaj   +2 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

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

Diazole and triazole derivatives of castor oil extract: synthesis, hypoglycemic effect, antioxidant potential and antimicrobial activity

Grasas y Aceites, 2020
The ricinoleate triglyceride was extracted from castor-oil seeds grown in Algeria and isolated by catalytically methanolyse to methyl ricinoleate.
F. Taieb Brahimi, F. Belkhadem, B. Trari, A. A. Othman   +3 more
doaj   +1 more source

Highly Selective Cyclization and Isomerization of Propargylamines to Access Functionalized Quinolines and 1-Azadienes

Molecules, 2023
Developing new organic reactions with excellent atom economy and high selectivity is significant and urgent. Herein, by ingeniously regulating the reaction conditions, highly selective transformations of propargylamines have been successfully implemented.
Zheng-Guang Wu, Hui Zhang, Chenhui Cao, Chaowu Lu, Aiwei Jiang, Jie He, Qin Zhao, Yanfeng Tang   +7 more
doaj   +1 more source

Methyl 3-Bromo-5-carbamoylisothiazole-4-carboxylate

Molbank, 2023
Reaction of methyl 3-bromo-5-cyanoisothiazole-4-carboxylate with conc. H2SO4 gave methyl 3-bromo-5-carbamoylisothiazole-4-carboxylate in 93% yield. The compound was fully characterized.
Andreas S. Kalogirou, Panayiotis A. Koutentis   +1 more
doaj   +1 more source