How to Lose a Bond in Two Ways ― The Diradical/Zwitterion Dichotomy in Cycloaromatization Reactions

Silver triflate–copper(ii) acetate cooperative catalysis in a cascade reaction for concise synthesis of 2-carbonyl H-pyrazolo[5,1-a]isoquinolines

(2012) Zhiyuan Chen et al.   CHEMICAL COMMUNICATIONS

Assembly of fused indenesvia Au(i)-catalyzed C1–C5 cyclization of enediynes bearing an internal nucleophile

(2012) Qiwen Hou et al.   CHEMICAL COMMUNICATIONS

Recent Developments in Enediyne Chemistry

(2012) Mukesh C. Joshi et al.   CHEMISTRY & BIODIVERSITY

Gold(I)-Catalyzed Regioselective Inter-/Intramolecular Addition Cascade of Di- and Triynes for Direct Construction of Substituted Naphthalenes

(2012) Saori Naoe et al.   JOURNAL OF ORGANIC CHEMISTRY

Metal Cocatalyzed Tandem Alkynylative Cyclization Reaction of in Situ Formed N-Iminoisoquinolinium Ylides with Bromoalkynes via C–H Bond Activation

(2012) Ping Huang et al.   JOURNAL OF ORGANIC CHEMISTRY

Polyaromatic Ribbons from Oligo-Alkynes via Selective Radical Cascade: Stitching Aromatic Rings with Polyacetylene Bridges

(2012) Philip M. Byers et al.   JOURNAL OF THE AMERICAN CHEMICAL SOCIETY

Aromatic Transition States in Nonpericyclic Reactions: Anionic 5-Endo Cyclizations Are Aborted Sigmatropic Shifts

(2012) Kerry Gilmore et al.   JOURNAL OF THE AMERICAN CHEMICAL SOCIETY

Hybrids of amino acids and acetylenic DNA-photocleavers: optimising efficiency and selectivity for cancer phototherapy

(2012) Boris Breiner et al.   ORGANIC & BIOMOLECULAR CHEMISTRY

When the nine-membered enediynes play hide and seek

(2012) Mickaël Jean et al.   ORGANIC & BIOMOLECULAR CHEMISTRY

Polyaromatic Ribbon/Benzofuran Fusion via Consecutive Endo Cyclizations of Enediynes

(2012) Philip M. Byers et al.   ORGANIC LETTERS

Ambient Schmittel Cyclization Promoted by Chemoselective Triazole-Gold Catalyst

(2012) Qiaoyi Wang et al.   ORGANIC LETTERS

The Role of Gold Acetylides as a Selectivity Trigger and the Importance of gem-Diaurated Species in the Gold-Catalyzed Hydroarylating-Aromatization of Arene-Diynes

(2012) A. Stephen K. Hashmi et al.   ORGANOMETALLICS

An efficient approach to H-pyrazolo[5,1-a]isoquinolines via a silver triflate-catalyzed reaction of N′-(2-alkynylbenzylidene)hydrazide with allenoate

(2012) Liang Gao et al.   TETRAHEDRON

Cyclizations of Alkynes: Revisiting Baldwin’s Rules for Ring Closure

(2011) Kerry Gilmore et al.   CHEMICAL REVIEWS

Synthesis of Heterocycles via Electrophilic Cyclization of Alkynes Containing Heteroatom

(2011) Benhur Godoi et al.   CHEMICAL REVIEWS

Synthesis of Unique Extended π Structures by Pt-Mediated Benzannulation of Nickel(II) Tetraalkynylporphyrins

(2011) Leigh J. K. Boerner et al.   CHEMISTRY-A EUROPEAN JOURNAL

Chameleonic Reactivity of Vicinal Diazonium Salt of Acetylenyl-9,10-anthraquinones: Synthetic Application toward Two Heterocyclic Targets

(2011) A. A. Stepanov et al.   JOURNAL OF ORGANIC CHEMISTRY

Synthesis of Ultrathin Ordered Porous Carbon through Bergman Cyclization of Enediyne Self-Assembled Monolayers on Silica Nanoparticles

(2011) Zhiwen Li et al.   Journal of Physical Chemistry C

The thermal C2-C6 (Schmittel)/ene cyclization of enyne-allenes - crossing the boundary between classical and nonstatistical kinetics

(2011) Michael Schmittel et al.   JOURNAL OF PHYSICAL ORGANIC CHEMISTRY

Rules for Anionic and Radical Ring Closure of Alkynes

(2011) Igor V. Alabugin et al.   JOURNAL OF THE AMERICAN CHEMICAL SOCIETY

Experimental and Computational Evidence for Gold Vinylidenes: Generation from Terminal Alkynes via a Bifurcation Pathway and Facile C–H Insertions

(2011) Longwu Ye et al.   JOURNAL OF THE AMERICAN CHEMICAL SOCIETY

Synthesis ofH-Pyrazolo[5,1-a]isoquinolines via Copper(II)-Catalyzed Oxidation of an Aliphatic C−H Bond of Tertiary Amine in Air

(2011) Shaoyu Li et al.   ORGANIC LETTERS

Three-Component Reaction ofN′-(2-Alkynylbenzylidene)hydrazide, Alkyne, with Sulfonyl Azide via a Multicatalytic Process: A Novel and Concise Approach to 2-Amino-H-pyrazolo[5,1-a]isoquinolines

(2011) Shaoyu Li et al.   ORGANIC LETTERS

Urea as an organic solvent and reagent for the addition/cyclization/fragmentation cascades leading to 2-R-7H-dibenzo[de,h]quinolin-7-one analogues of Aporphinoid alkaloids

(2011) Denis S. Baranov et al.   RSC Advances

Hyperconjugation

(2011) Igor V. Alabugin et al.   Wiley Interdisciplinary Reviews-Computational Molecular Science

Facile Assembly of H-Pyrazolo[5,1-a]isoquinolines via Silver Triflate-Catalyzed One-Pot Tandem Reaction of 2-Alkynyl- benzaldehyde, Sulfonohydrazide, and Ketone or Aldehyde

(2010) Xingxin Yu et al.   ADVANCED SYNTHESIS & CATALYSIS

Photochemical Triggering of the Bergman and Myers–Saito Cyclizations

(2010) Andrei Polukhtine et al.   AUSTRALIAN JOURNAL OF CHEMISTRY

Silver triflate-catalyzed three-component reaction of 2-alkynylbenzaldehyde, sulfonohydrazide, and α,β-unsaturated carbonyl compound

(2010) Shengqing Ye et al.   CHEMICAL COMMUNICATIONS

Indole as Neutral Leaving Group in Silver Nitrate Induced Cyclization Reactions ofN-{2-[Alkynyl(hetero)aryl]methylene}indolin-1-amines for the Synthesis of Annulated Pyridine Derivatives

(2010) Nugzar Ghavtadze et al.   EUROPEAN JOURNAL OF ORGANIC CHEMISTRY

Nucleophilic Cycloaromatization of Ynamide-Terminated Enediynes

(2010) Andrei Poloukhtine et al.   JOURNAL OF ORGANIC CHEMISTRY

Theoretical Studies on Myers−Saito and Schmittel Cyclization Mechanisms of Hepta-1,2,4-triene-6-yne

(2010) Shogo Sakai et al.   JOURNAL OF PHYSICAL CHEMISTRY A

Synthesis of Ultrathin Mesoporous Carbon through Bergman Cyclization of Enediyne Self-Assembled Monolayers in SBA-15

(2010) Xi Yang et al.   LANGMUIR

Cyclization kinetics and biological evaluation of an anticancer 1,2-dialkynylimidazole

(2010) Christophe Laroche et al.   ORGANIC & BIOMOLECULAR CHEMISTRY

Efficient Generation of Biologically ActiveH-Pyrazolo[5,1-a]isoquinolines via Multicomponent Reaction

(2010) Zhiyuan Chen et al.   ORGANIC LETTERS

Silver Triflate-Catalyzed or Electrophile-Mediated Tandem Reaction ofN′-(2-Alkynylbenzylidene)hydrazides with Dimethyl Acetylenedicarboxylate

(2009) Zhiyuan Chen et al.   ADVANCED SYNTHESIS & CATALYSIS

Dual reactivity of a photochemically-generated cyclic enyne–allene

(2009) Alexander V. Kuzmin et al.   CHEMICAL COMMUNICATIONS

AgOTf-catalyzed tandem reaction of N′-(2-alkynylbenzylidene)hydrazide with alkyne

(2009) Zhiyuan Chen et al.   CHEMICAL COMMUNICATIONS

An Unexpected Rearrangement That Disassembles Alkyne Moiety Through Formal Nitrogen Atom Insertion between Two Acetylenic Carbons and Related Cascade Transformations: New Approach toSampangineDerivatives and Polycyclic Aromatic Amides

(2009) Sergei F. Vasilevsky et al.   JOURNAL OF ORGANIC CHEMISTRY

Tuning Selectivity of Anionic Cyclizations: Competition between 5-Exo and 6-Endo-Dig Closures of Hydrazides ofo-Acetylenyl Benzoic Acids and Based-Catalyzed Fragmentation/Recyclization of the Initial 5-Exo-Dig Products

(2009) Sergey F. Vasilevsky et al.   JOURNAL OF ORGANIC CHEMISTRY

Synthesis of Isoquinoline Derivatives via Ag- Catalyzed Cyclization of 2-Alkynyl Benzyl Azides

(2009) Yan-Ning Niu et al.   JOURNAL OF ORGANIC CHEMISTRY

Synthesis of functionalized H-pyrazolo[5,1-a]isoquinolines via sequential reactions of N′-(2-alkynylbenzylidene)hydrazides

(2009) Zhiyuan Chen et al.   ORGANIC & BIOMOLECULAR CHEMISTRY

Synthesis of tetrahydropyrans and related heterocycles via prins cyclization; extension to aza-prins cyclization

(2009) Clarisse Olier et al.   TETRAHEDRON

Tetrabutylammonium chloride-triggered 6-endo cyclization of o-alkynylisocyanobenzenes: an efficient synthesis of 2-chloro-3-substituted quinolines

(2009) Lanying Liu et al.   TETRAHEDRON LETTERS

Thermal C2−C6Cyclization of Enyne−Carbodiimides:  Experimental Evidence Contradicts a Diradical and Suggests a Carbene Intermediate

(2008) Michael Schmittel et al.   JOURNAL OF ORGANIC CHEMISTRY

Gold-Catalyzed Hydrative Carbocyclization of 1,5- and 1,6-Diyn-3-ones via an Oxygen Transfer Process

(2008) Jhih-Meng Tang et al.   JOURNAL OF ORGANIC CHEMISTRY

Iodine-Mediated Electrophilic Cyclization of 2-Alkynyl-1-methylene Azide Aromatics Leading to Highly Substituted Isoquinolines and Its Application to the Synthesis of Norchelerythrine

(2008) Dirk Fischer et al.   JOURNAL OF THE AMERICAN CHEMICAL SOCIETY

Thermal C1−C5Diradical Cyclization of Enediynes

(2008) Chandrasekhar Vavilala et al.   JOURNAL OF THE AMERICAN CHEMICAL SOCIETY

Gold-Catalyzed Cycloisomerization of 1,5-Allenynes via Dual Activation of an Ene Reaction

(2008) Paul Ha-Yeon Cheong et al.   JOURNAL OF THE AMERICAN CHEMICAL SOCIETY

Iodine-mediated electrophilic cyclization of 2-alkynylbenzaldoximes leading to the formation of iodoisoquinoline N-oxides

(2008) Zhibao Huo et al.   TETRAHEDRON LETTERS

Highly efficient electrophilic cyclization of N′-(2-alkynylbenzylidene)hydrazides

(2008) Qiuping Ding et al.   TETRAHEDRON LETTERS