The preparation of several 1,2,3,4,5-functionalized cyclopentane derivatives
Beilstein Journal of Organic Chemistry, 2013 With the goal of eventually synthesizing [5]radialene (3), the still missing member of the parent radialene hydrocarbons, we have prepared the pentaacetates 21 and 31, the pentabromide 29 and the hexabromide 32.
André S. Kelch +3 more
doaj +1 more source
Visible-light photocatalytic intramolecular cyclopropane ring expansion [PDF]
, 2017 Described herein is a new visible-light photocatalytic strategy for the synthesis of enantioenriched dihydrofurans and cyclopentenes by an intramolecular nitro cyclopropane ring expansion reaction.
Amador +27 more
core +2 more sources
Oxidative Heck desymmetrisation of 2,2-disubstituted cyclopentene-1,3-diones [PDF]
, 2015 Oxidative Heck couplings have been successfully developed for 2,2-disubstituted cyclopentene-1,3-diones. The direct coupling onto the 2,2-disubstituted cyclopentene-1,3-dione core provides a novel expedient way of enantioselectively desymmetrising all ...
Beattie, N. A. +4 more
core +1 more source
Polar alicyclic rings: synthesis and structure of all cis-1,2,3,4-tetrafluorocyclopentane [PDF]
, 2016 The authors are grateful to the Chinese Scholarship Council for Studentship support (ZF), to EPSRC for financial support and to the EPSRC National Mass Spectrometry Service at Swansea for analytical support.
Al-Maharik, Nawaf +4 more
core +2 more sources
Consequences of Medium‐Pore Zeolite Constraints for Alkene Cracking—The Case of n‐Pentene
Angewandte Chemie, EarlyView.Alkene cracking in medium‐pore zeolites is governed by a balance of enthalpic and entropic effects. Intrinsic barriers are quantified and shown to be lower than for alkanes due to stabilization of carbenium‐ion‐like transition states. Confinement and extra‐framework aluminum modulate reactivity by tuning transition‐state energetics, providing a ...
Ruixue Zhao +4 more
wiley +2 more sources
Catalytic upgrading of hydrothermal liquefaction biocrudes: Different challenges for different feedstocks [PDF]
, 2019 Hydrothermal liquefaction (HTL) followed by catalytic hydrotreating of the produced biocrude is increasingly gaining ground as an effective technology for the conversion of biomass into liquid biofuels.
Castello, Daniele +2 more
core +3 more sources
A New Class of Substrates for Nucleophilic 5-endo-trig Cyclization, 2-Trifluoromethyl-1-alkenes: Synthesis of Five-Membered Hetero- and Carbocycles That Bear Fluorinated One-Carbon Units [PDF]
, 2008 Disfavored 5-endo-trig cyclizations were achieved in 2-trifluoromethyl-1-alkenes with a nucleophilic nitrogen, oxygen, sulfur, or carbon atom through 1) intramolecular SN2 reaction with loss of a fluoride ion or 2) intramolecular nucleophilic addition to
Ichikawa Junji +5 more
core +1 more source
Angewandte Chemie, EarlyView.Amino‐bearing silsesquioxanes are water‐stable nanozymes that exhibit aggregation‐ and disaggregation‐dependent catalysis and can be applied to intracellular prodrug activation for cancer therapy. ABSTRACT Synthetic nanozymes have emerged as promising alternatives to natural enzymes for catalytic and therapeutic applications, yet their limited ...
Rabia Zahid +4 more
wiley +2 more sources
Organocatalytic Enantioselective Henry Reactions [PDF]
, 2011 This is an open access article distributed under the Creative Commons Attribution License.A large number of interesting organocatalytic enantioselective protocols have been explored and successfully applied in the last decade.
Herrera, Raquel P. +2 more
core +2 more sources
Positive allosteric modulators of the a-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid (AMPA) receptor [PDF]
, 2010 L-glutamate is the major excitatory neurotransmitter in the mammalian central nervous system (CNS) and plays a fundamental role in the control of motor function, cognition and mood.
Grove, Simon J .A. +4 more
core +1 more source