Results 11 to 20 of about 349,221 (347)
Electric field–catalyzed single-molecule Diels-Alder reaction dynamics
Science Advances, 2021 An electric field promotes an unprecedented stepwise Diels-Alder cycloaddition reaction mechanism. Precise time trajectories and detailed reaction pathways of the Diels-Alder reaction were directly observed using accurate single-molecule detection on an ...
Chen Yang +12 more
semanticscholar +1 more source
How Lewis Acids Catalyze Diels–Alder Reactions
Angewandte Chemie, 2020 The Lewis acid(LA)‐catalyzed Diels–Alder reaction between isoprene and methyl acrylate was investigated quantum chemically using a combined density functional theory and coupled‐cluster theory approach.
P. Vermeeren +3 more
semanticscholar +1 more source
Diels–Alder Reactions During the Biosynthesis of Sorbicillinoids
Angewandte Chemie, 2020 The sorbicillinoids are a class of biologically active and structurally diverse fungal polyketides arising from sorbicillin. Through co‐expression of sorA, sorB, sorC, and sorD from Trichoderma reesei QM6a, the biosynthetic pathway to epoxysorbicillinol ...
Lukas Kahlert +3 more
semanticscholar +1 more source
Green Chemistry, 2020 A green route to synthesize a self-healing polyurethane-urea Diels–Alder adduct (PUUa-DA) using CO2 and furfuryl amine as renewable feedstocks is reported.
Peixuan Wu +6 more
semanticscholar +1 more source
Enantioselective Organocatalytic Diels-Alder Trapping of Photochemically Generated Hydroxy-o-Quinodimethanes [PDF]
, 2016 The photoenolization/Diels-Alder strategy offers straightforward access to synthetically valuable benzannulated carbocyclic products. This historical light-triggered process has never before succumbed to efforts to develop an enantioselective catalytic ...
Cuadros, Sara +3 more
core +2 more sources
Den tredje alder
Norsk Antropologisk Tidsskrift, 2021 I dag regnes uttrykket «den tredje alder» gjerne som ensbetydende med pensjonisttilværelsen, selv om forestillingen om at menneskelivet kan deles inn i tre aldre er svært mye eldre enn pensjonsinstituttet.
Jon Schackt
doaj +1 more source
Land, 2022 A comparative analysis of the riparian vegetation dominated by Alnus glutinosa in Italy and Tyrrhenian islands, based on literature data and unpublished relevés, is presented. A total of 456 phytosociological relevés were processed. For the definition of
Saverio Sciandrello +17 more
doaj +1 more source
A convenient tandem one-pot synthesis of donor-acceptor-type triphenylene 2,3-dicarboxylic esters from diarylacetylene [PDF]
, 2014 A tandem one-pot method for the direct synthesis of polysubstituted triphenylene 2,3-dicarboxylic esters with different substitution patterns was developed by enyne metathesis of diarylacetylene, followed by Diels–Alder, aromatization and a cyclization ...
Feng, Chun +9 more
core +1 more source
Synthesis and use of a stable aminal derived from TsDPEN in asymmetric organocatalysis [PDF]
, 2010 A stable aminal formed stereoselectively from (R,R)-N-tosyl-1,2-diphenyl-1,2-ethylenediamine (TsDPEN) is capable of asymmetric organocatalysis of Diels-Alder and alpha-amination reactions of ...
Clarkson, Guy J. +3 more
core +1 more source
MULTIPLE VENTRICULAR SEPTAL DEFECTS: A NEW STRATEGY
Frontiers in Pediatrics, 2013 INTRODUCTIONA multicenter prospective study was conducted to evaluate a new strategy for multiple Ventricular Septal Defects (VSDs).MATERIALS AND METHODSFrom 2004 to 2012 17 consecutive children (3 premature, 14 infants), mean age 3.2months (9 days to 9 ...
Antonio Francesco Corno +5 more
doaj +1 more source