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chemistry, organic (39) 39
5-exo-dig (21) 21
5-exo-dig cyclization (20) 20
derivatives (15) 15
alkynes (14) 14
synthesis (10) 10
cyclization (9) 9
chemistry (7) 7
chemistry, multidisciplinary (7) 7
efficient synthesis (7) 7
intramolecular cyclization (7) 7
palladium (7) 7
catalysis (6) 6
chemistry, applied (6) 6
cycloisomerization (6) 6
terminal alkynes (6) 6
heterocycles (5) 5
inhibitors (5) 5
ring-closure (5) 5
tetrahedrons (5) 5
6-endo-dig (4) 4
access (4) 4
aldehydes (4) 4
alkenes (4) 4
catalysts (4) 4
chemical properties (4) 4
efficient (4) 4
electrophilic cyclization (4) 4
radical cyclization (4) 4
regioselectivity (4) 4
ring formation (4) 4
rules (4) 4
tandem nucleophilic addition (4) 4
water (4) 4
-3-aryl (3) 3
acids (3) 3
alcohols (3) 3
analysis (3) 3
carbonyl groups (3) 3
catalyzed cyclization (3) 3
copper (3) 3
cu-free sonogashira (3) 3
cyclization reaction (3) 3
cyclization reactions (3) 3
cyclizations (3) 3
facile synthesis (3) 3
gold catalysis (3) 3
heteroannulation (3) 3
hydrindane (3) 3
index medicus (3) 3
letter (3) 3
ligands (3) 3
metalated nitriles (3) 3
methodology (3) 3
micelle (3) 3
one-pot (3) 3
one-pot synthesis (3) 3
quinoline (3) 3
reaction in water (3) 3
regioselective 5-exo-dig addition (3) 3
regioselective synthesis (3) 3
route (3) 3
stereoselective-synthesis (3) 3
terminals (3) 3
-3-methyleneisoindoline-1-one (2) 2
1,3-dihydrofuro[3,4-b]quinoline (2) 2
1,8-diazabicyclo[5.4.0]undec-7-ene (2) 2
2-benzyl alcohol (2) 2
5- exo- dig cyclization (2) 2
5-exo-dig regiochemistry (2) 2
acetylenic aldehydes (2) 2
alkaloids (2) 2
alkine (2) 2
analogs (2) 2
annulation (2) 2
aryl (2) 2
base-catalyzed cyclization (2) 2
benzofurans (2) 2
benzopyrans - chemistry (2) 2
betulinic acid (2) 2
biological evaluation (2) 2
carboannulation (2) 2
carbohydrates (2) 2
carbon disulfide (2) 2
carbon triple bond (2) 2
carbonyls (2) 2
cascade reactions (2) 2
chemical sciences (2) 2
claisen rearrangement (2) 2
complexes (2) 2
construction (2) 2
cu (2) 2
cu-free (2) 2
cyclic alkenyl ethers (2) 2
cyclisation (2) 2
cycloaddition (2) 2
furans (2) 2
furo[3,4-d]pyrimidines (2) 2
gold - chemistry (2) 2
heck reaction (2) 2
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Tetrahedron Letters, ISSN 0040-4039, 05/2015, Volume 56, Issue 23, pp. 3216 - 3219
Abstract A rare 5-exo-dig S N i′ cyclization with magnesiated and lithiated nitriles affords a cis-fused hydrindane bearing an exocyclic allene. The... 
Metalated nitriles | 5-exo-Dig | Hydrindane | S N i′ cyclization
Journal Article
Organic Letters, ISSN 1523-7060, 11/2013, Volume 15, Issue 22, pp. 5650 - 5653
Despite the possibility of intermolecular attack at four different locations, the Bu3Sn-mediated radical cyclization of aromatic enynes is surprisingly... 
ALCOHOLS | CARBOANNULATION | REGIOSELECTIVE SYNTHESIS | CHEMISTRY, ORGANIC | CATALYZED CYCLIZATION | PI-BONDS | ALKYNES | RULES | INDENE DERIVATIVES | 5-EXO-DIG | CATIONS
Journal Article
Tetrahedron Letters, ISSN 0040-4039, 06/2015, Volume 56, Issue 23, pp. 3216 - 3219
[Display omitted] A rare 5-exo-dig SNi′ cyclization with magnesiated and lithiated nitriles affords a cis-fused hydrindane bearing an exocyclic allene. The... 
SNi′ cyclization | Metalated nitriles | 5-exo-Dig | Hydrindane | 5-exo-dig
Journal Article
Journal of the American Chemical Society, ISSN 0002-7863, 06/2012, Volume 134, Issue 23, pp. 9609 - 9614
Selective radical generation in conjugated oligomeric o-aryleneethynylenes initiates an intramolecular cascade which involves five fast radical cyclizations... 
MONOMERS | CARBON | CYCLIZATIONS | HYDROCARBONS | ENEDIYNES | CONSTRUCTION | GRAPHENE | SYSTEMS | GRAPHITE | CHEMISTRY, MULTIDISCIPLINARY | 5-EXO-DIG | Ring formation (Chemistry) | Chemical properties | Polyacetylene | Graphene | Cascade reactions | Analysis
Journal Article
Organic Letters, ISSN 1523-7060, 02/2016, Volume 18, Issue 4, pp. 680 - 683
A unique strategy for the regiospecific synthesis of bicyclic furopyran derivatives has been developed via a gold­(I)-catalyzed propargyl-Claisen... 
REARRANGEMENT | MITSUNOBU REACTION | GOLD-CATALYZED CYCLOISOMERIZATION | RADICAL CYCLIZATION | CHEMISTRY, ORGANIC | HETEROGENEOUS CATALYSIS | (E,Z)-DIENALS | RULES | RING-CLOSURE | 5-EXO-DIG | ACCESS
Journal Article
European Journal of Organic Chemistry, ISSN 1434-193X, 04/2017, Volume 2017, Issue 15, pp. 2108 - 2111
A visible‐light‐mediated synthesis of 5‐methylene‐pyrrolidinones is reported. This constitutes to the first reported example of a 5‐exo‐dig hydroamination... 
Single‐electron transfer | Radical reactions | Cyclization | 5‐exo‐dig | Radicals | 5-exo-dig | Single-electron transfer | NITROGEN-CENTERED RADICALS | ARENES | CHEMISTRY, ORGANIC | HYDROAMINATION | PHOTOREDOX CATALYSIS | HETEROARENES | ELECTRON-TRANSFER | SYNTHETIC APPLICATIONS | CHEMISTRY | GENERATION | PRECURSORS
Journal Article
Beilstein Journal of Organic Chemistry, ISSN 1860-5397, 03/2017, Volume 13, Issue 1, pp. 625 - 638
Thiazoles and their hydrogenated analogues are not only key structural units in a wide variety of natural products but they also constitute important building... 
5-exo-dig cyclization | 6-endo-dig cyclization | N-propargylamines | N-heterocycles | Thiazoles | thiazoles | EFFICIENT SYNTHESIS | HANTZSCH SYNTHESIS | CHEMISTRY, ORGANIC | CLINICAL EFFICACY | CARBON-DISULFIDE | ANTICANCER ACTIVITY | FACILE SYNTHESIS | AGENTS | INHIBITOR | DERIVATIVES | URIC-ACID
Journal Article
MolBank, ISSN 1422-8599, 03/2019, Volume 2019, Issue 1, p. M1042
The title compound 5′(Z)-benzylidene-tetrahydrofurano[3,2-b]lup-20(29)-en-28-oate was synthesized with high chemo-, regio-, and stereoselectivity by 5-exo-dig... 
5-exo-dig heterocyclization | Tetrahydrofuranes | Betulinic acid | Alkynes | tetrahydrofuranes | betulinic acid | alkynes
Journal Article
Angewandte Chemie International Edition, ISSN 1433-7851, 02/2019, Volume 58, Issue 8, pp. 2289 - 2294
Ynamides are typically more reactive than simple alkynes and olefins. However, a serendipitous observation revealed a rare case where the reactivity of simple... 
ynamides | 4-thioaryl-pyrroles | radical cyclization | 5-exo-dig cyclization | alkynes | GAUSSIAN-2 G2 THEORY | AB-INITIO | EXTENSION | SULFUR | CHEMISTRY, MULTIDISCIPLINARY | MOLECULES | THIYL RADICALS | ATOMS | CYCLOISOMERIZATION | OXO GOLD CARBENES | ACCESS | Sulfur compounds | Alkenes | Regioselectivity | Sulfur | Protecting groups | Pyrroles | Alkynes | Chemical Sciences | Other
Journal Article
Tetrahedron Letters, ISSN 0040-4039, 07/2013, Volume 54, Issue 29, pp. 3805 - 3809
Journal Article
Advanced Synthesis & Catalysis, ISSN 1615-4150, 08/2019, Volume 361, Issue 15, pp. 3605 - 3611
Journal Article
European Journal of Organic Chemistry, ISSN 1434-193X, 04/2018, Volume 2018, Issue 15, pp. 1806 - 1812
A one‐pot synthesis of 1‐alkylidenephthalanes from 3‐(2‐bromophenyl)propyne derivatives has been developed. 3‐(2‐Bromophenyl)propynal acetals 9 and... 
Domino reactions | Phenylpropynal acetals | 5‐exo‐dig Cyclization | Orthoesters | Alkylidenephthalanes | DFT calculations | 5-exo-dig Cyclization | ALCOHOLS SYNTHESIS | REGIOSELECTIVE SYNTHESIS | PHTHALANS | CHEMISTRY, ORGANIC
Journal Article
Organic Letters, ISSN 1523-7060, 10/2011, Volume 13, Issue 20, pp. 5580 - 5583
Journal Article
Tetrahedron Letters, ISSN 0040-4039, 11/2015, Volume 56, Issue 47, pp. 6629 - 6632
[Display omitted] Palladium-catalyzed highly regioselective 5-exo-dig O-cyclization/coupling of a series of ethyl 3-(2-alkynylphenyl)-3-oxopropanoates with... 
O-Cyclization/coupling | 1,3-Dihydroisobenzofurans | Palladium-catalyzed | 5-exo-dig | SUBSTITUTION | ACID | CHEMISTRY, ORGANIC | PALLADIUM-CATALYZED CYCLOISOMERIZATION | ISOBENZOFURANONE | (Z)-1-ALKYLIDENE-1,3-DIHYDROISOBENZOFURANS | 2-ALKYNYLBENZYL ALCOHOLS | ISOPESTACIN | PHTHALANS | 1H-ISOCHROMENES | DERIVATIVES | Palladium
Journal Article
Synlett, ISSN 0936-5214, 01/2015, Volume 26, Issue 2, pp. 173 - 176
Abstract Substituted o -amino- N -(prop-2-yn-1-yl) aromatic amides easily reacted with carbon disulfide (CS 2 ) in the presence of potassium hydroxide (KOH) in... 
letter | carbon disulfide | 5- exo -dig | 2-methylene-thiazolo[2 3- b ]quinazolinones | propargylamine | fused quinazolinone | 2-methylene-thiazolo[2,3- b ]quinazolinones | HALOCYCLIZATION REACTIONS | UNSATURATED SULFIDES | 5-exo-dig | ANALOGS | BIOLOGICAL EVALUATION | CHEMISTRY, ORGANIC | 2-methylene-thiazolo[2,3-b]quinazolinones | INHIBITORS | QUINAZOLINES
Journal Article
Tetrahedron, ISSN 0040-4020, 04/2015, Volume 71, Issue 14, pp. 2134 - 2148
5-exo-Dig versus 6-endo-dig oxycyclizations of alkynols having an internal triple bond catalyzed by PdCl2, followed by methoxycarbonylation of the resulting... 
Oxycyclization–methoxycarbonylation | 5-exo-Dig | Polymaxenolide | 6-endo-Dig | Oxycyclization-methoxycarbonylation | OXIDATIVE CARBONYLATION | ENOL-ETHERS | ALKOXYCARBONYLATION | CHEMISTRY, ORGANIC | MODEL | MEDIATED CYCLOISOMERIZATION | RING FORMATION | CEMBRANE | SYSTEMS | EFFICIENT | CYCLIZATION-CARBONYLATION | Palladium | Synthesis | Chemical properties | Analysis | Quinone | Organic compounds
Journal Article
Angewandte Chemie, ISSN 0044-8249, 02/2019, Volume 131, Issue 8, pp. 2311 - 2316
Ynamides are typically more reactive than simple alkynes and olefins. However, a serendipitous observation revealed a rare case where the reactivity of simple... 
Radikalische Cyclisierungen | 4-Thioarylpyrrole | 5-exo-dig-Cyclisierung | Alkine | Inamide | Sulfur compounds | Alkenes | Regioselectivity | Sulfur | Protecting groups | Pyrroles | Alkynes
Journal Article
Tetrahedron Letters, ISSN 0040-4039, 12/2012, Volume 53, Issue 50, pp. 6789 - 6792
An environmentally benign and operationally simple methodology was developed for the regio- and stereoselective synthesis of (Z)-3-methyleneisoindolinones in... 
Micelle | (Z)-3-Methyleneisoindoline-1-one | Cu-free Sonogashira | Reaction in water | 5-Exo-dig cyclization | (Z)-3-ARYL(ALKYL)IDENE ISOINDOLIN-1-ONES | ONE-POT SYNTHESIS | CHEMISTRY, ORGANIC | TERMINAL ALKYNES | PHTHALALDEHYDE | SONOGASHIRA | HETEROANNULATION | DERIVATIVES | EFFICIENT | CYCLIZATION | WATER | Synthesis (chemistry) | Catalysts | Methodology | Tetrahedrons | Ligands | Terminals | Copper | Alkynes
Journal Article
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