Results 1 to 10 of about 2,222 (186)

Solvent-free mechanochemical multicomponent preparation of 4H-pyrans catalyzed by Cu2(NH2-BDC)2(DABCO) metal-organic framework [PDF]

Heliyon, 2023
4H-pyrans have been prepared through a mechanochemical multicomponent reaction (MCR) of different aldehydes, malononitrile, and various 1,3-dicarbonyl compounds, catalyzed by an amine-functionalized metal-organic framework (MOF) Cu2(NH2-BDC)2(DABCO) as a
Zahra Akhlaghi, Mohammad R. Naimi-Jamal, Leila Panahi, Mohammad G. Dekamin, Bahareh Farasati Far   +4 more
doaj   +2 more sources

Zr-MOF-glutaraldehyde-Adn@Fe3O4 nanocomposite: as a new adsorbent for removal of methylene blue and heterogeneous nanocatalyst for the synthesis of tetrahydrobenzo[b]pyran derivatives [PDF]

Scientific Reports
In this research, a magnetic hybrid material (Zr-MOF-glutaraldehyde-Adn@Fe3O4) consisting of UiO-66-NH2 as a stable and unique metal-organic framework, and Fe3O4 nanoparticles was synthesized.
Fatemeh Yazdiamiri, Heshmatollah Alinezhad, Ameneh Kiani, Shahram Ghasemi   +3 more
doaj   +2 more sources

Metal-organic framework catalysed multicomponent reactions towards the synthesis of Pyrans [PDF]

Heliyon
Metal-Organic Frameworks (MOFs) gaining increasing interest in heterogeneous catalysis owing to their advantageous properties such as superior porosity, high surface area, ample catalytic sites.
Subrahmanya Ishwar Bhat, Chinmay Bhat
doaj   +2 more sources

Facile Assembly of Structurally Diverse 2H-Pyrans Enabled by Chloropalladation-Initiated Carboetherification of Alkenes [PDF]

Molecules
3,6-Dihydro-2H-pyran heterocyclic framework is one of the currently developed heterocyclic building blocks in both pharmaceutical chemistry and organic synthesis, but with significant challenges.
Fanghua Mao, Bowen Wang, Zhengwang Chen, Yin-Long Lai, Huanfeng Jiang, Jianxiao Li   +5 more
doaj   +2 more sources

Entry to new spiroheterocycles via tandem Rh(II)-catalyzed O–H insertion/base-promoted cyclization involving diazoarylidene succinimides [PDF]

Beilstein Journal of Organic Chemistry
A facile approach to novel medicinally relevant spiro heterocyclic scaffolds (namely furan-2(5H)-ones, tetrahydrofurans and pyrans spiro-conjugated with the succinimide ring) has been developed.
Alexander Yanovich, Anastasia Vepreva, Ksenia Malkova, Grigory Kantin, Dmitry Dar’in   +4 more
doaj   +2 more sources

Alcohol-Directed Carboamination of Conjugated Enynes. [PDF]

Angew Chem Int Ed Engl
The first general three‐component intermolecular Pd‐catalyzed carboamination of conjugated enynes enables the coupling of anilines and aryl triflates to produce functionalized allenic amines, utilizing a native alcohol directing group to control regioselectivity.
Solé-Àvila H, Brownsey DK, Senelle H, Waser J.   +3 more
europepmc   +3 more sources

Recent Progress in the Multicomponent Synthesis of Pyran Derivatives by Sustainable Catalysts under Green Conditions

Molecules, 2022
Pyrans are one of the most significant skeletons of oxygen-containing heterocyclic molecules, which exhibit a broad spectrum of medicinal applications and are constituents of diverse natural product analogues.
Suresh Maddila, Nagaraju Kerru, Sreekantha Babu Jonnalagadda   +2 more
doaj   +1 more source

Starch-derived magnetic nanoparticles (Fe3O4@C-SO3H): Synthesis, Characterization and Its application on the preparation of dihydropyrano[c]chromenes, 2‑Amino-3-cyano‑4H‑pyrans and 2-amino-4H-chromenes derivatives [PDF]

شیمی کاربردی روز, 2019
In this study, a novel biomass and Starch-derived carbonaceous solid acid catalyst (Fe3O4@C-SO3H) that has superparamagnetism with high acid density was successfully prepared for the first time by incomplete hydrothermal carbonization of Starch followed ...
Fatemeh Khorsi Damghani, Seied Ali Pourmousavi, Hamzeh Kiyani   +2 more
doaj   +1 more source

Innovating Electrosynthesis From Metal Electrodeposition to Organic Chemistry: Deep Eutectic Solvents as Efficient and Sustainable Media. [PDF]

ChemSusChem
This review analyzes deep eutectic solvents (DESs) as efficient media for both organic and inorganic electrosynthesis. The improvements in terms of synthetic opportunities and sustainability are discussed, by exploring the multiple roles of DESs as solvents, electrolytes, and promoters, enabling effective and selective electrosynthesis under mild and ...
Margarita C, Nejrotti S, Leal-Duaso A, Feroci M, Sanson A, Barolo C, Bonomo M.   +6 more
europepmc   +2 more sources

Synthesis of 2-amino-4H-pyran and 2-benzylidene malononitrile derivatives using a basil seed as a cheap, natural, and biodegradable catalyst

Current Research in Green and Sustainable Chemistry, 2022
Developing green and sustainable principles in catalytic systems using natural materials is becoming a suitable strategy to reduce the possible pollutant with high-risk agents.
Eskandar Kolvari, Nadiya Koukabi, Zohreh Ozmaei, Hadise Khoshkho, Farzad Seidi   +4 more
doaj   +1 more source