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1. Full Text Catalytic arylsulfonyl radical-triggered 1,5-enyne-bicyclizations and hydrosulfonylation of α,β-conjugates
by Chen, Zhen-Zhen and Liu, Shuai and Hao, Wen-Juan and Xu, Ge and Wu, Shuo and Miao, Jiao-Na and Jiang, Bo and Wang, Shu-Liang and Tu, Shu-Jiang and Li, Guigen
Chemical Science, ISSN 2041-6520, 08/2015, Volume 6, Issue 11, pp. 6654 - 6658
A catalytic bicyclization reaction of 1,5-enynes anchored by alpha, beta-conjugates with arylsulfonyl radicals generated in situ from sulfonyl hydrazides has... 
ELECTROPHILIC CYCLIZATION | ACTIVATED ALKENES | CASCADE REACTIONS | CYCLIZATION-ELIMINATION REACTION | BOND FUNCTIONALIZATION | SULFONYL HYDRAZIDES | TANDEM CYCLIZATION | STEREOSELECTIVE-SYNTHESIS | OXIDATIVE CYCLIZATION | CHEMISTRY, MULTIDISCIPLINARY | ENYNE CYCLIZATIONS
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2. Catalytic arylsulfonyl radical-triggered 1,5-enyne-bicyclizations and hydrosulfonylation of alpha , beta -conjugates
by Chen, Zhen-Zhen and Liu, Shuai and Hao, Wen-Juan and Xu, Ge and Wu, Shuo and Miao, Jiao-Na and Jiang, Bo and Wang, Shu-Liang and Tu, Shu-Jiang and Li, Guigen
Chemical Science, ISSN 2041-6520, 10/2015, Volume 6, Issue 11, pp. 6654 - 6658
A catalytic bicyclization reaction of 1,5-enynes anchored by alpha , beta -conjugates with arylsulfonyl radicals generated in situ from sulfonyl hydrazides has... 
Synthesis | Catalysts | Accessibility | Cascades | Benzoyl peroxide | Hydrazides | Catalysis | Radicals
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3. Full Text Samarium(II)-Iodide-Mediated Cyclizations in Natural Product Synthesis
by Edmonds, David J and Johnston, Derek and Procter, David J
Chemical Reviews, ISSN 0009-2665, 07/2004, Volume 104, Issue 7, pp. 3371 - 3404
AMINO CARBONYL-COMPOUNDS | PHOTOINDUCED MOLECULAR-TRANSFORMATIONS | CASCADE RADICAL CYCLIZATIONS | REDUCTIVE INTRAMOLECULAR CYCLIZATION | KETYL-OLEFIN CYCLIZATION | FORMAL TOTAL-SYNTHESIS | IODIDE-INDUCED CYCLIZATION | SAMARIUM(II)-MEDIATED 4-EXO-TRIG CYCLIZATION | HEXAMETHYLPHOSPHORIC TRIAMIDE HMPA | CHEMISTRY, MULTIDISCIPLINARY | PRADIMICIN-BENANOMICIN ANTIBIOTICS | Biological Factors - chemistry | Iodides - chemistry | Cyclization | Samarium - chemistry | Biological Factors - chemical synthesis | Ring formation (Chemistry) | Research | Samarium | Chemical properties
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4. Full Text Concerted Reactions That Produce Diradicals and Zwitterions: Electronic, Steric, Conformational, and Kinetic Control of Cycloaromatization Processes
by Mohamed, Rana K and Peterson, Paul W and Alabugin, Igor V
Chemical Reviews, ISSN 0009-2665, 09/2013, Volume 113, Issue 9, pp. 7089 - 7129
MEDIATED ELECTROPHILIC CYCLIZATION | TRANSITION-STATE STABILIZATION | BENZANNULATED ENYNE-ALLENES | MYERS-SAITO CYCLIZATION | THERMAL C-2-C-6 CYCLIZATION | INTRAMOLECULAR REDUCTIVE CYCLIZATION | DEPENDENT BERGMAN CYCLIZATION | 2-ALKYNYL BENZYL AZIDES | CHEMISTRY, MULTIDISCIPLINARY | HYDROGEN ABSTRACTION REACTIONS | GOLD-CATALYZED SYNTHESIS | Chemical properties | Research | Ring formation (Chemistry) | Zwitterions | Radicals (Chemistry)
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5. Full Text Formation of Five- and Six-Membered Heterocyclic Rings under Radical Cyclization Conditions
by Majumdar, K. C and Karunakar, Galla V and Sinha, Biswajit
Synthesis, ISSN 0039-7881, 08/2012, Volume 44, Issue 16, pp. 2475 - 2505
Abstract This review describes the formation of five- and six-membered heterocyces in various organic molecules by radical cyclization­ and covers the progress... 
review | radical relay cyclization | tributyltin hydride | oxidative radical cyclization | radical cyclization | tandem radical cyclization | atom-transfer radical cyclization | nitrogen heterocycles | cascade cyclization | TANDEM ADDITION-CYCLIZATION | HEX-5-ENYL | CHEMISTRY, ORGANIC | FUNCTIONAL REARRANGEMENT | SULFUR HETEROCYCLES | CENTERED RADICALS | COUPLING REACTIONS | STEREOCHEMICAL CONTROL | REGIOSELECTIVE SYNTHESIS | RECENT PROGRESS | FORCE-FIELD
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6. Full Text Gold-Catalyzed Synthesis of Polycyclic Enones from Carbon Tethered 1,3-Enynyl Carbonyls via Tandem Heteroenyne Metathesis and Nazarov Reaction
by Jin, Tienan and Yamamoto, Yoshinori
Organic Letters, ISSN 1523-7060, 07/2008, Volume 10, Issue 14, pp. 3137 - 3139
An efficient and general Au(III)-catalyzed tandem reaction, heteroenyne metathesis and Nazarov cyclization, of 1,3-enynyl ketones to produce fused tri- and... 
CHEMISTRY, ORGANIC | KETONES | CYCLIZATIONS
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7. Full Text Palladium-Catalyzed Synthesis of Aryl Vinyl Sulfides via 1,3-Oxathiolanes As Vinyl Sulfide Surrogates
by Schmink, Jason R and Dockrey, Summer A. Baker and Zhang, Tianyi and Chebet, Naomi and van Venrooy, Alexis and Sexton, Mary and Lew, Sarah I and Chou, Steffany and Okazaki, Ami
Organic Letters, ISSN 1523-7060, 12/2016, Volume 18, Issue 24, pp. 6360 - 6363
A nontraditional approach to synthesizing aryl vinyl sulfides is described. 2,2-Diphenyl-1,3-oxathiolane slowly liberates a vinyl sulfide anion under basic... 
C-S | CHEMISTRY, ORGANIC | CYCLIZATIONS
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8. Full Text Samarium Diiodide Mediated Reactions in Total Synthesis
by Nicolaou, K. C and Ellery, Shelby P and Chen, Jason S
Angewandte Chemie International Edition, ISSN 1433-7851, 09/2009, Volume 48, Issue 39, pp. 7140 - 7165
Introduced by Henri Kagan more than three decades ago, samarium diiodide (SmI2) has found increasing application in chemical synthesis. This single‐electron... 
natural products | samarium | total synthesis | reduction | domino reactions | Domino reactions | Reduction | Samarium | Natural products | Total synthesis | CASCADE RADICAL CYCLIZATIONS | REDUCTIVE COUPLING REACTIONS | 2ND TOTAL-SYNTHESIS | PHYSIOLOGICALLY ACTIVE SUBSTANCES | DOUBLE ALDOL CYCLIZATION | CHEMISTRY, MULTIDISCIPLINARY | PINACOL MACROCYCLIZATION CASCADE | CYCLIZATION-ELIMINATION REACTION | BARBIER-TYPE REACTIONS | ENANTIOSELECTIVE TOTAL-SYNTHESIS | ASYMMETRIC TOTAL-SYNTHESIS | Paclitaxel - chemistry | Cyclization | Paclitaxel - chemical synthesis | Samarium - chemistry | Stereoisomerism | Indicators and Reagents | Iodides - chemistry | Molecular Structure | Structure-Activity Relationship | Catalysis
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9. Full Text Cyclizations of alkynes: Revisiting Baldwins rules for ring closure
by Gilmore, Kerry and Alabugin, Igor V
Chemical Reviews, ISSN 0009-2665, 11/2011, Volume 111, Issue 11, pp. 6513 - 6556
MEDIATED ELECTROPHILIC CYCLIZATION | POLYCYCLIC AROMATIC-HYDROCARBONS | PRINS-TYPE CYCLIZATION | SUBSTITUTED CYCLOPROPYLCARBINYL RADICALS | STABILIZED VINYL CATIONS | INTRAMOLECULAR ORGANOMETAL-ACETYLENE | ABSOLUTE RATE CONSTANTS | 2-ALKYNYL BENZYL AZIDES | CHEMISTRY, MULTIDISCIPLINARY | BIOMIMETIC POLYENE CYCLIZATIONS | CARBON-CENTERED RADICALS | Analysis | Ring formation (Chemistry)
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10. Full Text SmI2-Mediated Carbonyl-Alkene Couplings for the Synthesis of Small Carbocyclic Rings
by Harb, Hassan Y and Procter, David J
Synlett, ISSN 0936-5214, 01/2012, Volume 2012, Issue 1, pp. 6 - 20
Abstract The electron transfer reducing agent samarium diiodide (SmI 2 ) mediates reductive carbonyl-alkene couplings to give small carbocyclic rings with high... 
account | ORGANIC-SYNTHESIS | STEREOCONTROLLED APPROACH | radical reactions | small rings | CHEMISTRY, ORGANIC | STEREOSELECTIVE CYCLIZATION | FUNCTIONALIZED CYCLOBUTANOLS | cyclization | natural product synthesis | 3-EXO-TRIG CYCLIZATION | samarium diiodide | NATURAL-PRODUCT SYNTHESIS | RADICAL CYCLIZATIONS | SAMARIUM(II)-MEDIATED 4-EXO-TRIG CYCLIZATION | PESTALOTIOPSIN-A
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11. Full Text Transition‐Metal‐Catalyzed Cyclization of Alkynals via Oxametallacycle Intermediates
by Tanaka, Ken and Tajima, Yuki
European Journal of Organic Chemistry, ISSN 1434-193X, 07/2012, Volume 2012, Issue 20, pp. 3715 - 3725
The transition‐metal‐catalyzed cyclization of alkynals viaoxametallacycle intermediates is a useful method for thestereoselective synthesis of cyclic allylic... 
Cyclization | Aldehydes | Homogeneous catalysis | Alkynes | ACETYLENIC-COMPOUNDS | ENANTIOSELECTIVE SYNTHESIS | INTRAMOLECULAR HYDROACYLATION | CHEMISTRY, ORGANIC | ARYLATIVE CYCLIZATION | MEDIUM-SIZED RINGS | (+)-ALLOPUMILIOTOXIN 267A | BOND-FORMING HYDROGENATION | ALLYLIC ALCOHOLS | ASYMMETRIC HYDROGENATION | REDUCTIVE CYCLIZATION
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12. Full Text (Hetero)aromatics from dienynes, enediynes and enyne-allenes
by Raviola, Carlotta and Protti, Stefano and Ravelli, Davide and Fagnoni, Maurizio
CHEMICAL SOCIETY REVIEWS, ISSN 0306-0012, 7/2016, Volume 45, Issue 15, pp. 4364 - 439
The construction of aromatic rings has become a key objective for organic chemists. While several strategies have been developed for the functionalization of... 
FISCHER CARBENE COMPLEXES | CASCADE RADICAL CYCLIZATIONS | RING-CLOSING METATHESIS | POLYCYCLIC AROMATIC-HYDROCARBONS | MYERS-SAITO CYCLIZATION | SUBSTITUTED NAPHTHALENES | RUTHENIUM-CATALYZED AROMATIZATION | CHEMISTRY, MULTIDISCIPLINARY | PHOTOCHEMICAL C-2-C-6 CYCLIZATION | IMIDAZOLE-FUSED ENEDIYNES | BERGMAN CYCLIZATION
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13. Full Text The thermal C 2-C 6 (Schmittel)/ene cyclization of enyne-allenes - Crossing the boundary between classical and nonstatistical kinetics
by Schmittel, Michael and Vavilala, Chandrasekhar and Cinar, Mehmet Emin
Journal of Physical Organic Chemistry, ISSN 0894-3230, 03/2012, Volume 25, Issue 3, pp. 182 - 197
The thermal (CC6)-C-2/ene cyclization of enyneallenes has become an exciting venue for both mechanistic and synthetic studies. While at first most efforts were... 
diradical | mechanism | thermolysis | cyclization | ANTITUMOR ANTIBIOTICS | BIRADICAL CYCLIZATION | MYERS-SAITO CYCLIZATION | SCHMITTEL CYCLIZATIONS | CHEMISTRY, ORGANIC | CHEMISTRY, PHYSICAL | ENEDIYNE MODEL COMPOUNDS | BERGMAN CYCLIZATION | DNA STRAND CLEAVAGE | DIRADICAL CYCLIZATION | DIELS-ALDER REACTION | RADICAL CYCLIZATION
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14. Full Text Phosphinic acid-promoted addition reaction of isocyanides to (Z)-hydroximoyl chlorides: Efficient synthesis of α-(hydroxyimino)amides
by Soeta, Takahiro and Takashita, Suguru and Sakata, Yoko and Ukaji, Yutaka
Organic and Biomolecular Chemistry, ISSN 1477-0520, 2016, Volume 14, Issue 2, pp. 694 - 700
The reaction of (Z)-hydroximoyl chlorides with isocyanides promoted by phosphinic acid in the presence of triethylamine proceeds smoothly to afford... 
CHEMISTRY, ORGANIC | CYCLOADDITION | CYCLIZATIONS
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15. Full Text Lewis Acid-Catalyzed Synthesis of Benzofurans and 4,5,6,7-Tetrahydrobenzofurans from Acrolein Dinner and 1,3-Dicarbonyl Compounds
by Huang, WB and Xu, J and Liu, CH and Chen, ZY and Gu, YL
JOURNAL OF ORGANIC CHEMISTRY, ISSN 0022-3263, 03/2019, Volume 84, Issue 5, pp. 2941 - 2950
2,3-Disubstituted benzofurans were synthesized from acrolein dimer and 1,3-dicarbonyl compounds by using N-bromosuccinimide as an oxidizing agent. The method... 
ANNULATION | CHEMISTRY, ORGANIC | CYCLIZATION
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16. Full Text Radical C-H functionalization to construct heterocyclic compounds
by Yu, Jin-Tao and Pan, Changduo
Chemical Communications, ISSN 1359-7345, 02/2016, Volume 52, Issue 11, pp. 2220 - 2236
Heterocyclic compounds are widely present in natural products, pharmaceuticals and bioactive molecules. Thus, organic and pharmaceutical chemists have been... 
2-OXOQUINOLINE DERIVATIVES | INTRAMOLECULAR CYCLIZATION | ACIDS | CATALYZED C(SP)-H | BOND FUNCTIONALIZATION | TANDEM CYCLIZATION | OXIDATIVE CYCLIZATION | PART 2 | CHEMISTRY, MULTIDISCIPLINARY | PLATELET AGGREGATION INHIBITORS | AROMATIC-SUBSTITUTION BHAS
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