Results 11 to 20 of about 5,333 (179)
Synthetic Approaches to Naturally Occurring Cyclopentanes [PDF]
, 1966 PART I. Five synthetic routes to the prostaglandins, a group of highly substituted cyclopentanes, have been explored. The first four routes were unsuccessful but have provided interesting and useful information on a variety of substituted cyclopentanes ...
Clayton, John Peter
core +5 more sources
Frontiers in Chemistry, 2021 A Brønsted acid-catalyzed domino ring-opening cyclization transformation of donor-acceptor (D-A) cyclopropanes and 2-naphthols has been developed.
Hua Zhao +4 more
doaj +1 more source
Molecules, 2021 We have developed a photochemical ATRA/ATRC reaction that is mediated by halogen bonding interactions. This reaction is caused by the reaction of malonic acid ester derivatives containing bromine or iodine with unsaturated compounds such as alkenes and ...
Kazuki Matsuo +3 more
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Nanomaterials, 2022 Sliding electrical contacts need to be lubricated by conductive lubricants to perform low energy dissipation, high reliability, and long service life.
Zhengfeng Cao +5 more
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Tetrahedron Chem, 2022 An enantio- and diastereodivergent [2+2+1] annulation reaction of allyl ketones, acidic methylene compounds, and nitroalkenes to assemble highly functionalized cyclopentanes from readily available substances enabled by asymmetric relay catalysis of ...
Lian-Feng Fan +3 more
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Access to Spirooxindole-fused Cyclopentanes via Stereoselective Organocascade Reaction using Bifunctional Catalysis [PDF]
, 2022 The present study reports an asymmetric organocascade reaction of oxindole-derived alkenes with 3-bromo-1-nitropropane efficiently catalyzed by the bifunctional catalyst. Spirooxindole-fused cyclopentanes were produced in moderate-to-good isolated yields
Simona, Petrželová +4 more
core +2 more sources
Ionic Liquids as Performance Ingredients in Space Lubricants
Molecules, 2021 Low vapor pressure and several other outstanding properties make room-temperature ionic liquids attractive candidates as lubricants for machine elements in space applications.
Erik Nyberg +4 more
doaj +1 more source
Global Warming and Mass Extinctions Associated With Large Igneous Province Volcanism
Geophysical Monograph Series, Page 83-102., 2021 Exploring the links between Large Igneous Provinces and dramatic environmental impact
An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
David P. G. Bond, Yadong Sun
wiley +1 more source
Molecules, 2018 From 1,2;3,4-di-O-isopropylidene-d-galactopyranose, a preliminary series of highly functionalized amino(hydroxymethyl)cyclopentanes was easily available. These amine-containing basic carbasugars featuring the d-galacto configuration are potent inhibitors
Patrick Weber +10 more
doaj +1 more source
Cyclopropylamine-Derived Distonic Iminium Radicals: Photoinduced Strategies in Chemo- and Stereo-Selective Synthesis. [PDF]
ChemistryCyclopropylamines 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 ...
Cabua MC, Luridiana A, Secci F, Cocco E.
europepmc +2 more sources