Article
Chemistry, Multidisciplinary
Robert D. Riley, Blake S. N. Huchenski, Karlee L. Bamford, Alexander W. H. Speed
Summary: This study demonstrates that diazaphospholene hydrides can be regenerated by the combination of phenylsilane and alkali metal salts, enabling catalytic radical reactions of aryl iodides. The method is not only applicable to aryl iodides, but can also be extended to aryl bromides, which benefit from visible light irradiation. Additionally, intermolecular radical hydroarylation reactions with arenes, thiophenes, and a pyridine have been successfully achieved.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Review
Chemistry, Multidisciplinary
Jia-Yin Wang, Wen-Juan Hao, Shu-Jiang Tu, Bo Jiang
Summary: This article provides a comprehensive overview of the transformations of yne-allenes, discussing their general and specific reactivities, presenting and commenting on their mechanisms and applications.
CHINESE JOURNAL OF CHEMISTRY
(2022)
Review
Chemistry, Physical
Tong-De Tan, Ze-Shu Wang, Peng-Cheng Qian, Long-Wu Ye
Summary: Ynamides, as electron-rich heteroatom-substituted alkynes, have proven to be versatile reagents for organic synthesis and have received extensive attention. Radical reactions of ynamides, categorized by radical attack at the alpha-position and beta-position, are reviewed in this article to highlight reaction selectivity, scope, mechanism, and applicability. The aim is to provide a comprehensive summarization of these advances to guide the further development of ynamide chemistry.
Review
Chemistry, Organic
Muriel Amatore, Jean-Luc Parrain, Laurent Commeiras
Summary: Alkyne surrogates have emerged as alternative substitution partners in organic synthesis, overcoming drawbacks associated with alkynes and offering new opportunities for the preparation of high value molecules.
ASIAN JOURNAL OF ORGANIC CHEMISTRY
(2021)
Article
Chemistry, Organic
Abhisek Midya, Laxman Devidas Khalse, Prasanta Ghorai
Summary: In this study, an amine-catalyzed reductive aldol-condensation followed by an intramolecular reductive Michael-addition cascade was demonstrated, using Hantzsch ester as a hydride source to a keto-bis-enone, leading to the synthesis of enantio- and diastereoselective benzannulated diquinanes with three consecutive stereocenters, including an all-carbon quaternary formyl stereocenter. Interestingly, changing the tether from an aliphatic to an aromatic moiety resulted in a change in reactivity, where an asymmetric aldol reaction, followed by an iminium/enamine isomerization and diastereoselective Michael addition reaction, resulted in the formation of a bis-benzannulated diquinane with vicinal congested quaternary chiral centers.
EUROPEAN JOURNAL OF ORGANIC CHEMISTRY
(2023)
Article
Chemistry, Organic
Linpeng Liu, Yanyu Jian, Weigao Hu, Shaohu Zhao, Zhang-Jie Shi, Nicklas Selander, Taigang Zhou
Summary: A method for radical cyclization and ring-opening of oxime esters with diselenides has been developed. Both Ni(0) and Fe(ii) catalysts can be used for the selenylation of olefin-containing and cyclic oxime ester derivatives. Using this method, a variety of functionalized pyrrolines and alkyl nitriles can be synthesized in good yields. Additionally, a mechanism involving iminyl radical and carbon-centered radical intermediates has been proposed.
ORGANIC CHEMISTRY FRONTIERS
(2022)
Review
Chemistry, Organic
Muhammad Salman Javaid, Zulfiqar Ali Khan, Asim Mansha, Sohail Anjum Shahzad
Summary: Iodocarbocyclization reactions have been widely applied in synthetic organic chemistry in the past few decades, leading to the synthesis of a variety of carbocycles and heterocycles. This review highlights the important role of iodocarbocyclization reactions in synthetic organic chemistry.
SYNTHETIC COMMUNICATIONS
(2021)
Article
Chemistry, Physical
Yong-Liang Su, Geng-Xin Liu, Luca De Angelis, Ru He, Ammar Al-Sayyed, Kirk S. Schanze, Wen-Hao Hu, Huang Qiu, Michael P. Doyle
Summary: This study demonstrates the efficient generation of functionalized derivatives through photocatalyzed multicomponent reactions using nitrogen aromatic heterocycles, alkenes, and diazo compounds. The reaction shows high functional group tolerance and exacting regioselectivities. Mechanistic studies, including photophysical measurements, provide insights into this radical cascade reaction.
Article
Chemistry, Organic
Zach Medcalf, Essence G. G. Redd, Jaemyeong Oh, Chang Ji, Kevin D. D. Moeller
Summary: Recent discoveries in anodic cyclization reactions have shown that the success of a second electron oxidation step after cyclization can be utilized to direct a reaction towards new synthetic pathways. This article describes one application of this concept, which involves reversing the reactivity of an imine group through anodic cyclization, thereby enabling the asymmetric synthesis of cyclic amines.
Article
Chemistry, Organic
Stephanie Lee, Tilo Sohnel, Jonathan Sperry
Summary: In this study, unexpected results emerged during the synthetic study of the unique triazocane present in hicksoane alkaloids. The mechanisms behind the formation of the reaction products were elucidated through control reactions.
ORGANIC & BIOMOLECULAR CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Naoki Yokoyama, Nobuaki Tanaka, Natsumi Fujimoto, Rika Tanaka, Shuichi Suzuki, Daisuke Shiomi, Kazunobu Sato, Takeji Takui, Masatoshi Kozaki, Keiji Okada
Summary: A new radical substituted donor NN-DOTT was synthesized, characterized by X-ray crystal structure analysis and EPR spectra. The magnetic behavior of NN-DOTT+ . SbF6- was found to be characterized by strong intramolecular ferromagnetic interaction. NN-DOTT+ . FeBr4- underwent a magnetic phase transition into a weak ferromagnet at 7 K, as shown by magnetic measurements.
CHEMISTRY-AN ASIAN JOURNAL
(2021)
Article
Chemistry, Organic
Tian Ye, Jinjin Zhao, Wan-Xin Zheng, Junmin Zhang, Zhijuan Wang, Feng-Lian Zhang
Summary: A silyl radical-triggered radical addition-translocation-cyclization (RATC) process has been developed to synthesize structurally diverse silicon-incorporated indolines. The reaction involves silyl radical addition, 1,5-hydrogen atom transfer (HAT), and cyclization, leading to the formation of indoline framework. The substituents attached to the radical center can influence the subsequent reactions, including exclusive hydrogen atom transfer, radical 1,4-silyl migration, and oxidation/deprotonation process. These chemo-divergent reactions provide easy access to silicon-modified indolines from simple starting materials.
ORGANIC CHEMISTRY FRONTIERS
(2023)
Review
Chemistry, Organic
Ismail Alahyen, Laure Benhamou, Vincent Dalla, Catherine Taillier, Sebastien Comesse
Summary: Acrylamides are versatile building blocks that can be easily obtained from common starting materials. Over the past 20 years, they have been shown to be efficient partners in domino reactions, leading to a variety of complex aza-heterocycles. Metal-free and metal-triggered reactions allow good control of the reactivity of polyvalent acrylamides, resulting in diverse synthetic outcomes.
SYNTHESIS-STUTTGART
(2021)
Review
Chemistry, Organic
Carla K. Jurinic, Andrei L. Belladona, Ricardo F. Schumacher, Benhur Godoi
Summary: This review highlights the importance of organochalcogen-containing cyclic molecules in pharmacology and the recent advances in their synthesis through copper- and iron-promoted cyclization reactions of alkynyl substrates.
SYNTHESIS-STUTTGART
(2021)
Article
Chemistry, Applied
Elisa Brambilla, Silvia Meraviglia, Edoardo Moneta, Donatella Nava, Silvia Rizzato, Giorgio Abbiati, Valentina Pirovano
Summary: A photoredox-promoted approach for the synthesis of [1,4]diazepino[1,7-a]indol-6(7H)-ones starting from N-indolyl phenylacrylamides and aroyl chlorides as radical source is reported. This method involves a cascade radical addition on C-C double bond followed by intramolecular cyclization at indole C2-position, resulting in the formation of two diastereomeric indole-fused 1,4-diazepinones characterized by a N-C(aryl) axial chirality, with yields ranging from 51% to 99%.
ADVANCED SYNTHESIS & CATALYSIS
(2023)
Article
Chemistry, Multidisciplinary
Jiang Wang, Theresa H. Nguyen, Nan Zheng
SCIENCE CHINA-CHEMISTRY
(2016)
Article
Chemistry, Multidisciplinary
Yi Cai, Jiang Wang, Yuexiang Zhang, Zhi Li, David Hu, Nan Zheng, Hao Chen
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2017)
Article
Chemistry, Physical
Qile Wang, Nan Zheng
Review
Chemistry, Multidisciplinary
L. I. Granone, F. Sieland, N. Zheng, R. Dillert, D. W. Bahnemann
Article
Chemistry, Organic
Qile Wang, Jie Hu, Nan Zheng
Article
Chemistry, Multidisciplinary
Jiang Wang, Brian P. Cary, Peyton D. Beyer, Samuel H. Gellman, Daniel J. Weix
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2019)
Article
Chemistry, Organic
Qile Wang, Nan Zheng
Article
Chemistry, Physical
Narmina O. Balayeva, Nan Zheng, Ralf Dillert, Detlef W. Bahnemann
Article
Chemistry, Multidisciplinary
Jiang Wang, Megan E. Hoerrner, Mary P. Watson, Daniel J. Weix
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2020)
Article
Chemistry, Physical
Narmina O. Balayeva, Zamin Mamiyev, Ralf Dillert, Nan Zheng, Detlef W. Bahnemann
Article
Chemistry, Multidisciplinary
Jiang Wang, Chengyu Mao, Pingyun Feng, Nan Zheng
CHEMISTRY-A EUROPEAN JOURNAL
(2017)