Results 71 to 80 of about 6,809 (215)

Asymmetric synthesis of tetrahydroquinolines through supramolecular organocatalysis [PDF]

open access: yes, 2014
Functionalized chiral tetrahydroquinolines were synthesized through supramolecular organocatalysis using quinidine-NH-thiourea 3c/L-phenylalanine 4i followed by reductive amination from the simple ...
Ramachary, Dhevalapally B.   +1 more
core   +1 more source

Recent advances in organocatalytic atroposelective reactions

open access: yesBeilstein Journal of Organic Chemistry
Axial chirality is present in a variety of naturally occurring compounds, and is becoming increasingly relevant also in medicine. Many axially chiral compounds are important as catalysts in asymmetric catalysis or have chiroptical properties. This review
Henrich Szabados, Radovan Šebesta
doaj   +1 more source

Cyclopropylamine‐Derived Distonic Iminium Radicals: Photoinduced Strategies in Chemo‐ and Stereo‐Selective Synthesis

open access: yesChemistry – A European Journal, EarlyView.
Cyclopropylamines have emerged as powerful photocatalytic building blocks. Upon light‐induced single‐electron oxidation, they undergo strain‐release ring opening to generate distonic iminium radicals that enable diverse transformations, including ring‐opening functionalization, formal [3 + 2] cycloadditions, radical cascades, and asymmetric bond ...
Maria Chiara Cabua   +3 more
wiley   +1 more source

Chiral benzylamines in organocatalysis [PDF]

open access: yes, 2011
Hirālie benzilamīni organokatalīzē. Kalniņš T., zinātniskais vadītājs Dr. ķīm., asoc. prof. Sūna E. Bakalaura darbs, 84 lappuses, 42 attēli, 9 tabulas, 65 literatūras avoti. Latviešu valodā.
Kalniņš, Toms
core  

Chiral phosphines in nucleophilic organocatalysis

open access: yesBeilstein Journal of Organic Chemistry, 2014
This review discusses the tertiary phosphines possessing various chiral skeletons that have been used in asymmetric nucleophilic organocatalytic reactions, including annulations of allenes, alkynes, and Morita–Baylis–Hillman (MBH) acetates, carbonates ...
Yumei Xiao   +3 more
doaj   +1 more source

Rhodium‐Catalyzed Synthesis of Enantioenriched α‐Substituted Primary Amines Through Asymmetric Transfer Hydrogenation

open access: yesChemistry – A European Journal, EarlyView.
Enantioenriched α‐substituted primary amines are efficiently prepared by rhodium‐catalyzed asymmetric transfer hydrogenation of ortho‐hydroxyaryl N─H imines under mild conditions using a low catalyst loading and ammonium formate as the hydrogen source in high yields (up to 99%) and enantioselectivities (up to 99% ee).
Chonghuo Liu   +4 more
wiley   +1 more source

Learning Strategies from Nature's Blueprint to Cyclic Carbonate Synthesis

open access: yesChemSusChem, Volume 18, Issue 6, March 15, 2025.
The development of sustainable synthetic methods for cyclic carbonates draws inspiration from nature, focusing on eco‐friendly processes and renewable resources like CO2 and biomass. This review explore various CO2 activation mechanisms, green chemistry principles, and green catalysts.
Erika Saccullo   +4 more
wiley   +1 more source

Combining Organocatalysis with Transitionmetal Catalysis [PDF]

open access: yes, 2014
The use of transition metals or small organic molecules established as catalysts powerful technique in organic synthesis. In recent years combining transition metal with organocatalysis (dual catalysis) has gained considerable attention. The advantage of
Mulpuri, Naresh Babu
core   +1 more source

Circular and Bio‐Sourced Polymers for Energy Applications: Natural Feedstocks, Recycling, and Upcycling Routes

open access: yesEcoEnergy, EarlyView.
This review provides a critical comparative analysis of circular and bio‐sourced polymers for energy storage, systematically evaluating natural feedstocks alongside recycling and upcycling strategies for battery components. Key structure–property–performance relationships and inherent trade‐offs between sustainability metrics and electrochemical ...
Priyank Sinha   +3 more
wiley   +1 more source

ENANTIOSELECTIVE ORGANOCATALYSIS: EVOLUTION AND RECENT ASPECTS [PDF]

open access: yes, 2019
In the last two decades, enantioselective organocatalysis has established itself as one of the three pillars of asymmetric catalysis. The rapid growth in the area is due to the rationalization of organocatalysis based on the generic modes of catalyst ...
Fernanda G. Finelli (6745046)   +2 more
core   +1 more source

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