Synthesis of Polyfunctionalized 4H-Pyrans [PDF]
Journal of Chemistry, 2013 Amberlyst A21 catalyzed one-pot three-component coupling of aldehyde and malononitrile with active methylene compounds such as acetylacetone and ethyl acetoacetate for the synthesis of pharmaceutically important polyfunctionalized 4H-pyrans has been ...
Manisha Bihani +2 more
doaj +2 more sources
Introducing a CoFe2O4@CS-BAPT/CuII nanocomposite as an efficient catalyst for the synthesis of 4H-pyran derivatives [PDF]
Nanoscale AdvancesThis study introduces the development of an innovative and environmentally friendly bio-nanocatalyst (CoFe2O4@CS-BAPT/CuII nanocomposite), designed and employed for three-component synthesis of 2-amino-3-cyano-4H-pyrans.
Mohammad Ali Bodaghifard +2 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 ReportsIn 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 +3 more
doaj +2 more sources
Synthesis of novel photochromic pyrans via palladium-mediated reactions
Beilstein Journal of Organic Chemistry, 2009 Photochromic pyrans for applications in material and life sciences were synthesized via palladium-mediated cyanation, carbonylation and Sonogashira cross-coupling starting from bromo-substituted naphthopyran 1 and benzopyrans 2a/b.
Christoph Böttcher +7 more
doaj +2 more sources
Facile Assembly of Structurally Diverse 2H-Pyrans Enabled by Chloropalladation-Initiated Carboetherification of Alkenes [PDF]
Molecules3,6-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 +5 more
doaj +2 more sources
Metal-organic framework catalysed multicomponent reactions towards the synthesis of Pyrans [PDF]
HeliyonMetal-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
Flexible synthesis of spirocyclic pyrans and piperidines [PDF]
, 2012 Spirocyclic piperidines and spirocyclic pyrans are prevalent throughout nature, often appearing in natural products which exhibit exciting biological activities.
Ferrari, Frank D.
core +7 more sources
Heck-Type Coupling of Fused Bicyclic Vinylcyclopropanes: Synthesis of 1,2-Dihydropyridines, 2,3-Dihydro-1H-Azepines, 1,4-Cyclohexadienes, 2H-Pyrans, and 1,3-Butadienes [PDF]
, 2021 Herein, we report a versatile approach for the endocyclic ring-opening of bicyclic vinylcyclopropanes triggered by Heck arylations. Key step for this transformation is a [1,3]-migratory shift of Pd allowing the ring expansion of cyclopropanated pyrroles,
Sebastian, Fischer +6 more
core +1 more source
One-pot two-step mechanochemical synthesis of arylsulfonyl 4H-pyrans
, 2022 In this paper, a simple and environment-friendly protocol was developed for the synthesis of arylsulfonyl 4H-pyrans via L-proline-catalyzed one-pot two-step reaction of aromatic aldehyde with phenylsulphonyl acetonitrile and dimedone under ball-milling ...
Qianqian Huang (1409008) +4 more
core +1 more source
Iodine Catalyzed Synthesis of Substituted Furans and Pyrans: Reaction Scope and Mechanistic Insights [PDF]
, 2020 Substituted pyrans and furans are core structures found in a wide variety of natural products and biologically-active compounds. Herein, we report a practical and mild catalytic method for the synthesis of substituted pyrans and furans using molecular ...
Claude, Legault +4 more
core +3 more sources