X
Search Filters
Format Format
Subjects Subjects
Subjects Subjects
X
Sort by Item Count (A-Z)
Filter by Count
electrocyclic reactions (113) 113
chemistry, organic (110) 110
chemistry, multidisciplinary (74) 74
electrocyclic ring-closure (63) 63
cyclization (39) 39
derivatives (36) 36
chemistry (27) 27
cycloaddition (25) 25
electrocyclic ring closure (25) 25
index medicus (22) 22
heterocycles (20) 20
isomerization (19) 19
one-pot synthesis (18) 18
synthesis (18) 18
molecular structure (17) 17
photochromism (17) 17
strategy (17) 17
diels-alder reactions (15) 15
stereoisomerism (15) 15
alkynes (14) 14
aza-wittig reaction (14) 14
rearrangement (14) 14
acid (13) 13
chemistry, physical (13) 13
research (13) 13
organic-synthesis (12) 12
photochemistry (12) 12
stereoselective-synthesis (12) 12
article (11) 11
organic chemistry (11) 11
staudinger reaction (11) 11
aldehydes (10) 10
carbonyl-compounds (10) 10
catalysis (10) 10
conjugation (10) 10
conrotatory electrocyclic reactions (10) 10
enantioselective synthesis (10) 10
reaction mechanisms (10) 10
vinylallenes (10) 10
density functional calculations (9) 9
density-functional theory (9) 9
diels-alder reaction (9) 9
electrocyclization (9) 9
ketones (9) 9
pericyclic reactions (9) 9
ring-closure (9) 9
route (9) 9
analysis (8) 8
complexes (8) 8
electrocyclic (8) 8
electrocyclic reaction (8) 8
iminophosphorane-mediated synthesis (8) 8
ketenes (8) 8
nitrogen heterocycles (8) 8
pericyclic-reactions (8) 8
photoswitches (8) 8
reactivity (8) 8
ab initio calculations (7) 7
aromaticity (7) 7
asymmetric-synthesis (7) 7
chemical properties (7) 7
chemical reactions (7) 7
cycloadditions (7) 7
efficient (7) 7
efficient synthesis (7) 7
electrocyclic ring closures (7) 7
energy (7) 7
light (7) 7
mechanism (7) 7
natural-products (7) 7
stereochemistry (7) 7
total synthesis (7) 7
transition structures (7) 7
ab-initio (6) 6
allenes (6) 6
biomimetic synthesis (6) 6
construction (6) 6
cross-coupling (6) 6
cyclopentenones (6) 6
density functionals (6) 6
domino reactions (6) 6
force and energy (6) 6
formal synthesis (6) 6
inhibitors (6) 6
k ee chemistry, organic (6) 6
ketones - chemistry (6) 6
letter (6) 6
n-vinylic phosphazenes (6) 6
organic compounds (6) 6
physics, atomic, molecular & chemical (6) 6
ring formation (6) 6
sigmatropic rearrangements (6) 6
substituent (6) 6
synthetic methods (6) 6
system (6) 6
systems (6) 6
torquoselectivity (6) 6
transformations (6) 6
transition states (6) 6
alkaloids (5) 5
more...
Language Language
Publication Date Publication Date
Click on a bar to filter by decade
Slide to change publication date range


European Journal of Organic Chemistry, ISSN 1434-193X, 09/2018, Volume 2018, Issue 36, pp. 5065 - 5068
The mechanism for the reaction of dimethyl malonate with dimethyl acetylenedicarboxylate in the presence of pyridine and acetic acid to form isomeric... 
Ring contraction | Reaction mechanisms | Brønsted acids | Electrocyclic reactions | BRONSTED ACID | PENTAKIS(METHOXYCARBONYL)CYCLOPENTADIENE | COMPLEXES | CHEMISTRY | CHEMISTRY, ORGANIC | RUTHENIUM | CRYSTAL | POTASSIUM | Bronsted acids
Journal Article
European Journal of Organic Chemistry, ISSN 1434-193X, 12/2014, Volume 2014, Issue 35, pp. 7859 - 7864
The concept of cross‐conjugation has in recent years attracted increasing interest in materials science as well as in the field of molecular electronics as a... 
Conjugation | Kinetics | Cross‐coupling | Alkynes | Electrocyclic reactions | Cross-coupling | CONDUCTANCE | ELECTRON-TRANSFER | DENDRALENES | DIHYDROAZULENE | CHEMISTRY, ORGANIC | SYSTEMS | QUANTUM INTERFERENCE | Comparative analysis | Optical properties | Solar energy | Acetylene
Journal Article
Angewandte Chemie International Edition, ISSN 1433-7851, 04/2016, Volume 55, Issue 18, pp. 5526 - 5530
The phosphorus/boron‐substituted hexatriene systems 6 undergo thermally induced electrocyclic ring closure to yield the cyclohexadiene‐derived P/B frustrated... 
electrocyclic ring closure | metal-free dihydrogen activation | aromatization reaction | ipso substitution | frustrated Lewis pairs | FREE HYDROGEN ACTIVATION | CARBON | BORANE | CHEMISTRY, MULTIDISCIPLINARY | DIHYDROGEN | REDUCTION | CHEMISTRY | 1,1-ORGANOBORATION
Journal Article
ChemPhysChem, ISSN 1439-4235, 04/2016, Volume 17, Issue 7, pp. 963 - 966
Experimentalists are challenged to find the organometallic thermal electrocyclizations that are computationally predicted to proceed with opposite... 
organometallic compounds | stereoselectivity | electrocyclic reactions | Möbius aromaticity | orbital symmetry | Mobius aromaticity | ANNULENES | TRANSITION-METAL | ISOMERIZATION | PHYSICS, ATOMIC, MOLECULAR & CHEMICAL | CHEMISTRY, PHYSICAL | STATE | METALLACYCLES | Butadiene
Journal Article
Tetrahedron Letters, ISSN 0040-4039, 2011, Volume 52, Issue 50, pp. 6671 - 6674
A concise total synthesis of (±)-γ-lycorane is described. The key step in the synthesis is the 6π-electrocyclic ring closure of a divinylpyrroline to give a... 
Amaryllidaceae alkaloids | Electrocyclic ring closure | Divinylpyrroline | Indolizidine | Tetrahedrons | Closures | Synthesis (chemistry)
Journal Article
Helvetica Chimica Acta, ISSN 0018-019X, 06/2006, Volume 89, Issue 6, pp. 1231 - 1240
We have investigated 1,5‐electrocyclic ring‐closure reactions of conjugated esters with dimethyl diazomalonate in the presence of [Cu(acac)2] as catalyst. Our... 
γ‐Lactones | 1,5‐Electrocyclic ring closure | Diazo compounds | Ring closure | Carbenes | Ylides | ALPHA,BETA-ENONES | ASYMMETRIC-SYNTHESIS | FACILE SYNTHESIS | ESTERS | CYCLOPROPANATION | DIAZO-COMPOUNDS | EFFICIENT | CHEMISTRY, MULTIDISCIPLINARY
Journal Article
Tetrahedron Letters, ISSN 0040-4039, 07/2016, Volume 57, Issue 27-28, pp. 2954 - 2956
[Display omitted] •One-step formation of densely functionalized naphthalenes in one reaction flask.•Novel rearrangement of [8+2] cycloaddition products via... 
Cycloaddition | Electrocyclic ring closure | Rearrangement | CHEMISTRY, ORGANIC | DIENYLISOBENZOFURANS | DERIVATIVES | Isomerization
Journal Article
Journal of the American Chemical Society, ISSN 0002-7863, 11/2014, Volume 136, Issue 47, pp. 16477 - 16480
Journal Article
Synthesis, ISSN 0039-7881, 02/2009, Volume 2009, Issue 3, pp. 438 - 444
Abstract A facile and efficient one-pot procedure for the preparation of pyrazino[3′,2′:4,5]thieno[3,2-D]pyrimidines following a tandem... 
paper | Wittig reaction | Heterocycles | Cyclizations | Phosphazenes | Electrocyclic reactions | cyclizations | heterocycles | THIENOPYRIDINES | NITRIC-OXIDE | CHEMISTRY | CHEMISTRY, ORGANIC | phosphazenes | INHIBITORS | IMINOPHOSPHORANES | electrocyclic reactions | DERIVATIVES
Journal Article
Journal Article
Angewandte Chemie International Edition, ISSN 1433-7851, 11/2010, Volume 49, Issue 48, pp. 9094 - 9124
Journal Article
Tetrahedron, ISSN 0040-4020, 2005, Volume 61, Issue 32, pp. 7577 - 7606
Journal Article
Synthesis, ISSN 0039-7881, 07/2008, Volume 2008, Issue 14, pp. 2264 - 2270
Abstract 1-Lithiated O-vinyl carbamates add with high induced diastereoselectivity onto enantiomerically pure cycloalk-1-enyl (1-dibenzylamino)alkyl ketones.... 
paper | Cyclopentenones | Electrocyclic reaction | Carbanion | Asymmetric synthesis | Torquoselectivity
Journal Article
European Journal of Organic Chemistry, ISSN 1434-193X, 03/2019, Volume 2019, Issue 10, pp. 1986 - 1993
Molecular solar thermal energy storage (MOST) systems based on photochromic molecules that undergo photoisomerization to high‐energy isomers are attractive for... 
Fused‐ring systems | Cyanides | Conjugation | Photochromism | Electrocyclic reactions | Fused-ring systems | BISMUTH(III) COMPOUNDS | CHEMISTRY, ORGANIC | RELEASE | DIHYDROAZULENES | SOLVENT | VALENCE BASIS-SETS | ORBITAL METHODS | PHOTOSWITCHES | DERIVATIVES | RING-CLOSURE | Heat storage | Solar energy | Force and energy
Journal Article