X
Search Filters
Format Format
Format Format
X
Sort by Item Count (A-Z)
Filter by Count
Journal Article (2393) 2393
Publication (29) 29
Book Review (21) 21
Book Chapter (16) 16
Patent (9) 9
Book / eBook (2) 2
Conference Proceeding (2) 2
Dissertation (2) 2
more...
Subjects Subjects
Subjects Subjects
X
Sort by Item Count (A-Z)
Filter by Count
ring closure reactions (1509) 1509
ring closure reactions, annulation reactions (329) 329
catalysis, phase‐transfer catalysis (269) 269
chemistry, organic (262) 262
ring-closure (260) 260
diastereoselective syntheses, enantioselective syntheses (203) 203
catalysis (195) 195
fused pyridine derivatives (191) 191
indole derivatives, isoindole derivatives (184) 184
furan derivatives (162) 162
chemistry, multidisciplinary (158) 158
derivatives (134) 134
pyrrole derivatives (134) 134
cyclization (132) 132
cyclopentane derivatives (128) 128
fused pyrrole derivatives (127) 127
pyridine (109) 109
index medicus (96) 96
benzopyran derivatives (95) 95
multicomponent reactions (92) 92
pyridine derivatives (86) 86
benzofuran derivatives (84) 84
palladium (82) 82
c‐c bond formation (80) 80
ring closure (80) 80
pyran derivatives (79) 79
rearrangements (77) 77
ring-closure reactions (77) 77
chemistry (73) 73
quinoline derivatives (72) 72
multi‐membered n‐heterocycles (70) 70
cascade reactions, domino reactions, tandem reactions (67) 67
indan derivatives (64) 64
alkaloids (62) 62
fused pyrimidine derivatives (62) 62
ring opening reactions (55) 55
cyclohexane derivatives (54) 54
copper (53) 53
heterocycles (53) 53
organocatalysis (52) 52
organic chemistry (50) 50
radical reactions (50) 50
stereochemistry (50) 50
enantiomers (48) 48
organic-synthesis (48) 48
pyrazole derivatives (48) 48
isoquinoline derivatives (47) 47
chemistry, physical (45) 45
heterocyclic compounds (45) 45
molecular structure (45) 45
thiophene (45) 45
cycloaddition reactions (44) 44
analysis (43) 43
photochemistry, radiation chemistry, chemoluminescence (43) 43
quinoline (43) 43
imidazole derivatives (42) 42
oxazole derivatives (42) 42
amines (41) 41
chemical properties (41) 41
olefins (41) 41
spirocyclic compounds (41) 41
pyrazine derivatives (40) 40
synthesis (40) 40
microwave chemistry, sonochemistry, mechanochemistry (38) 38
ketones (36) 36
amination, n‐alkylation, n‐arylation (35) 35
organic chemistry, review (35) 35
oxidation, dehydrogenation (35) 35
rings with 7 or more members (34) 34
valence isomerism processes (34) 34
oxazine derivatives (32) 32
kinetics (31) 31
stereoisomerism (30) 30
esters (29) 29
rearrangement (29) 29
research (29) 29
thiazole derivatives (29) 29
oxidation (28) 28
asymmetric-synthesis (27) 27
benzimidazole derivatives (27) 27
multi‐membered o,s‐heterocycles (27) 27
polymerization processes, depolymerization processes (27) 27
addition reactions (26) 26
carbonylation (26) 26
chemical synthesis (26) 26
dehydrogenation (26) 26
nitriles (26) 26
stereoselective-synthesis (25) 25
alkynes (24) 24
multi‐membered o,n,s‐heterocycles (24) 24
organo‐silicon compounds (24) 24
terpenes (24) 24
biochemistry & molecular biology (23) 23
construction (23) 23
cyclopropane derivatives (23) 23
isomerization (23) 23
cycloaddition (22) 22
intermediates (22) 22
one-pot synthesis (22) 22
organic compounds (22) 22
more...
Library Location Library Location
Language Language
Publication Date Publication Date
Click on a bar to filter by decade
Slide to change publication date range


Journal of the American Chemical Society, ISSN 0002-7863, 03/2014, Volume 136, Issue 10, pp. 3744 - 3747
Described herein are two novel types of double C(sp3)–H bond functionalizations triggered by a sequential hydride shift/cyclization process: (1) construction... 
C-H BOND | ASYMMETRIC-SYNTHESIS | RING-CLOSURE REACTIONS | HYDROGEN-TRANSFER | 1,5-HYDRIDE TRANSFER/RING CLOSURE | STEREOCHEMICAL ASPECTS | TERT-AMINOCYCLIZATION | ALPHA-CYCLIZATION | CHEMISTRY, MULTIDISCIPLINARY | STEROID ALKALOIDS | HETEROCYCLIC CHEMISTRY | Ring formation (Chemistry) | Research | Chemical properties | Cyclic compounds
Journal Article
Journal of the American Chemical Society, ISSN 0002-7863, 05/2018, Volume 140, Issue 20, pp. 6203 - 6207
Described herein is a chiral magnesium bisphosphate-catalyzed asymmetric double C­(sp3)–H bond functionalization triggered by a sequential hydride... 
1,5-HYDRIDE TRANSFER/CYCLIZATION | C-H BOND | EXPEDITIOUS SYNTHESIS | ENANTIOSELECTIVE SYNTHESIS | RING-CLOSURE REACTIONS | MANNICH REACTIONS | METAL | BRONSTED ACID CATALYSIS | TERT-AMINOCYCLIZATION | SECONDARY-AMINES | CHEMISTRY, MULTIDISCIPLINARY
Journal Article
Tetrahedron, ISSN 0040-4020, 2005, Volume 61, Issue 27, pp. 6479 - 6517
Journal Article
The Journal of Organic Chemistry, ISSN 0022-3263, 01/2009, Volume 74, Issue 1, pp. 419 - 422
Journal Article
Organic Letters, ISSN 1523-7060, 01/2009, Volume 11, Issue 1, pp. 129 - 132
Journal Article
Journal of Pharmaceutical and Biomedical Analysis, ISSN 0731-7085, 08/2014, Volume 96, pp. 272 - 277
Journal Article
Organic Letters, ISSN 1523-7060, 11/2016, Volume 18, Issue 21, pp. 5608 - 5611
A TBSO group has been shown to exert a high degree of stereocontrol during the two-photon photocycloaddition/rearrangement of N-butenylpyrroles to complex... 
REARRANGEMENT | FLOW PHOTOCHEMISTRY | CHEMISTRY, ORGANIC | RAPID ACCESS | FORCE-FIELD | BATCH | AZIRIDINES | ADDITIONS | RING-CLOSURE
Journal Article
European Journal of Organic Chemistry, ISSN 1434-193X, 02/2014, Volume 2014, Issue 4, pp. 878 - 886
Heating a range of suitably substituted diazoacetoacetates produced a family of 2‐(1,3‐dioxolan‐2‐yl)phenyl ketenes that, under thermal conditions, smoothly... 
Sigmatropic rearrangement | Cycli­zation | Nitrogen heterocycles | Ketenes | Electrocyclic reactions | Cyclization | ROUTE | ANALOGS | CHEMISTRY, ORGANIC | SHIFTS | THERMAL CYCLIZATION | HETEROCYCLIC SYNTHESIS | REARRANGEMENT | ONE-POT PREPARATION | VITAMIN-D CALCIFEROL | DERIVATIVES | RING-CLOSURE | Hydrogen | Thiophene
Journal Article
Mendeleev Communications, ISSN 0959-9436, 09/2015, Volume 25, Issue 5, pp. 377 - 379
Reaction of 3-aryl-1-(3,4,5-trimethoxyphenyl)prop-2-yn-1-ones with (+)-pseudoephedrine leads to products of alkyne moiety cleavage, namely,... 
CASCADE TRANSFORMATIONS | CYCLOADDITION | KETONES | MOIETY | ALKYNES | RULES | CHEMISTRY, MULTIDISCIPLINARY | RING-CLOSURE
Journal Article
Tetrahedron Letters, ISSN 0040-4039, 2003, Volume 44, Issue 44, pp. 8081 - 8084
The access to ( E)-δ-alkenyl-β,γ-unsaturated δ-lactones starting from 3- O-(1,4-pentadienyl) 3-butenoate has been investigated by using a tandem process... 
cross-coupling | lactones | metathesis | ring-closure | isomerisation | Ring-closure | Isomerisation | Cross-coupling | Metathesis | Lactones | ROUTE | (+)-GONIODIOL | ESTERIFICATION | CHEMISTRY, ORGANIC | (+)-9-DEOXYGONIOPYPYRONE | ARGENTILACTONE | STEREOSELECTIVE-SYNTHESIS | ASYMMETRIC TOTAL-SYNTHESIS | FOSTRIECIN CI-920 | GONIOTHALAMIN
Journal Article
Organic Process Research & Development, ISSN 1083-6160, 08/2012, Volume 16, Issue 8, pp. 1348 - 1359
Previous synthetic processes for the preparation of sulopenem involved multistep linear sequences in which the chiral sulfoxide side chain was introduced early... 
PENEM ANTIBIOTICS | OXALIMIDE CYCLIZATION | 1-BETA-METHYLCARBAPENEMS | CARBAPENEMS | EFFICIENT SYNTHESIS | ANTIBACTERIAL | HEXAFLUORO-2-PROPANOL | CHEMISTRY, ORGANIC | CHEMISTRY, APPLIED | ESCHENMOSER SULFIDE CONTRACTION | BETA-LACTAMS | RING-CLOSURE
Journal Article
The Journal of Organic Chemistry, ISSN 0022-3263, 03/2004, Volume 69, Issue 6, pp. 2037 - 2041
The photostimulated reactions of several aryl and alkyl chlorides and bromides with the monoanion of reduced ethyl benzoate 5H furnish the reduced products in... 
STABILIZATION ENERGIES | HYDROGEN DONOR ABILITIES | SILYLATED CYCLOHEXADIENES | TRIBUTYLTIN HYDRIDE | ELECTRON-TRANSFER | INDUCED DEIODINATION | CHEMISTRY, ORGANIC | NUCLEOPHILIC-SUBSTITUTION REACTIONS | ARYL RADICALS | S(RN)1 MECHANISM | RING-CLOSURE | Ring formation (Chemistry) | Research | Observations | Halides
Journal Article
Current Organic Chemistry, ISSN 1385-2728, 03/2011, Volume 15, Issue 5, pp. 675 - 693
The reactive thiocarbonyl ylides belong to the less well-known class of the so-called 'sulfur-centered 1,3-dipoles'. Only in recent years have the [2+3]... 
Electrocyclizations | Sulfur heterocycles | Thiocarbonyl ylides | ALPHA-DIAZOCARBONYL COMPOUNDS | 1,3-DIPOLAR CYCLOADDITIONS | ORGANIC SULFUR | CHEMISTRY, ORGANIC | CARBONYL-COMPOUNDS | 1,3-OXATHIOLE | ACETATE-CATALYZED REACTION | PHENYL AZIDE | DERIVATIVES | RING-CLOSURE | AROMATIC THIOKETONES
Journal Article
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, ISSN 0002-7863, 03/2011, Volume 133, Issue 8, pp. 2424 - 2426
Described herein is the first example of an aliphatic, nonbenzylic hydride shift/cyclization sequence that contains two types of novel sp(3)-C-H... 
HETEROCYCLIC SYNTHESIS | ORGANIC-SYNTHESIS | ACTIVATION | C-H BOND | RING-CLOSURE REACTIONS | HYDROGEN-TRANSFER | STEREOCHEMICAL ASPECTS | ALKYNYL ETHERS | ALPHA-CYCLIZATION | CHEMISTRY, MULTIDISCIPLINARY | IN-SITU
Journal Article
Organic Letters, ISSN 1523-7060, 04/2010, Volume 12, Issue 8, pp. 1732 - 1735
An expeditious construction of a benzopyran skeleton via Lewis acid-catalyzed C−H functionalization was achieved. In this process, a [1,5] hydride shift and... 
HETEROCYCLIC SYNTHESIS | RING-CLOSURE REACTIONS | TERTIARY-AMINES | ALKYLATION | ISOMERIZATION | BOND FUNCTIONALIZATION | STEREOCHEMICAL ASPECTS | CHEMISTRY, ORGANIC | PYRROLO<1,2-A>QUINOLINES | ALPHA-CYCLIZATION | REDOX PROCESS
Journal Article
No results were found for your search.

Cannot display more than 1000 results, please narrow the terms of your search.