Results 11 to 20 of about 8,159 (220)

General Pyrrolidine Synthesis via Iridium-Catalyzed Reductive Azomethine Ylide Generation from Tertiary Amides and Lactams. [PDF]

ACS Catal, 2021
Yamazaki K, Gabriel P, Di Carmine G, Pedroni J, Farizyan M, Hamlin TA, Dixon DJ.   +6 more
europepmc   +2 more sources

Fully conjugated azacorannulene dimer as large diaza[80]fullerene fragment

Nature Communications, 2022
Heterofullerenes are an important synthetic target for organic chemists. Here, the authors demonstrate a fully conjugated azacorannulene dimer starting from a bifunctional polycyclic aromatic azomethine ylide, providing a powerful method for the bottom ...
Weifan Wang, Fiona Hanindita, Yosuke Hamamoto, Yongxin Li, Shingo Ito   +4 more
doaj   +1 more source

Study on Regio- and Diastereoselectivity of the 1,3-Dipolar Cycloaddition Reaction of Azomethine Ylide with 2‑(Benzo[d]thiazol-2-yl)-3-(aryl)acrylonitrile: Synthesis, Spectroscopic, and Computational Approach [PDF]

ACS Omega
Essam M. Hussein, Ziad Moussa, Jabir H. Al-Fahemi, Munirah M. Al-Rooqi, Rami J. Obaid, M. Shaheer Malik, Alaa S. Abd-El-Aziz, Saleh A. Ahmed   +7 more
doaj   +2 more sources

K₂CO₃-Promoted Formal [3+3]-Cycloaddition of N-Unsubstituted Isatin N,N′-Cyclic Azomethine Imine 1,3-Dipoles with Knoevenagel Adducts

Molecules, 2023
The synthesis of dicyclic spiropyridazine oxoindole derivatives by using [3+3]-cycloaddition of N-unsubstituted isatin N,N′-cyclic azomethine imine 1,3-dipoles was reported.
Guosheng Yang, Sicheng Li, Qiumi Wang, Huabao Chen, Chunping Yang, Zhongqiong Yin, Xu Song, Li Zhang, Cuifen Lu, Guizhou Yue   +9 more
doaj   +1 more source

Kinetic Resolution of Alkylidene Norcamphors via a Ligand-Controlled Umpolung-Type 1,3-Dipolar Cycloaddition

iScience, 2019
Summary: Development of a general catalytic and highly efficient method utilizing readily available precursors for the regio- and stereoselective construction of bioactive natural-product-inspired spiro architectures remains a formidable challenge in ...
Chong Shen, Yuhong Yang, Liang Wei, Wu-Wei Dong, Lung Wa Chung, Chun-Jiang Wang   +5 more
doaj   +1 more source

Exploring Regio- and Stereoselectivity in [3+2] Cycloaddition: Molecular Electron Density Theory Approach for Novel Spirooxindole-Based Benzimidazole with Pyridine Spacer

Crystals, 2023
A new ethylene derivative was synthesized as a precursor for the [3+2] cycloaddition (32CA) reaction to access a novel spirooxindole embodied with benzimidazole with a pyridine spacer.
Saeed Alshahrani, Abdullah Mohammed Al-Majid, Abdullah Saleh Alamary, Mar Ríos-Gutiérrez, Assem Barakat   +4 more
doaj   +1 more source

X=Y–ZH compounds as potential 1,3-dipoles. Part 64: Synthesis of highly substituted conformationally restricted and spiro nitropyrrolidines via Ag(I) catalysed azomethine ylide cycloadditions [PDF]

, 2008
1,3-Dipolar reactions of imines of both acyclic and cyclic α-amino esters with a range of nitroolefins using a combination of AgOAc or Ag2O with NEt3 are described.
Albert, Amornraksa, Ayerbe, Becker, Berger, Bourguignon, Bryce, Cecilia Orgaz de la Cierva, Colin Kilner, Crooks, Dondas, Díaz-Ortiz, Fejes, Fejes, Gentles, Grigg, Grigg, Grigg, Grigg, Grigg, Grigg, Grigg, Grigg, Grigg, H. Ali Dondas, Hill, Kabalka, Krapcho, Lee, Mohammed A.B. Sarker, Nielson, Norman, Nyerges, Nyerges, Nyerges, Nyerges, Nyerges, Pak, Peterli, Pinna, Poornachandran, Poornachandran, Poornachandran, Ram, Rang, Ronald Grigg, Sader-Bakaouni, Shorter, Song, Thurkauf, Vivanco, Yan   +51 more
core   +1 more source

[Bmim]Br Accelerated One-Pot Three-Component Cascade Protocol for the Construction of Spirooxindole–Pyrrolidine Heterocyclic Hybrids

Molecules, 2020
Our synthetic approach for the assembly of structurally complex spirooxindole heterocyclic hybrids was based on an ionic liquid, [bmim]Br mediated one-pot three-component cascade reaction strategy involving 1,3-dipolar cycloaddition reaction of N-1-(2 ...
Raju Suresh Kumar, Dhaifallah M. Al-thamili, Abdulrahman I. Almansour, Natarajan Arumugam, Necmi Dege   +4 more
doaj   +1 more source

Cationic Pyrrolidine/Pyrroline-Substituted Porphyrins as Efficient Photosensitizers against E. coli

Molecules, 2021
New porphyrin–pyrrolidine/pyrroline conjugates were prepared by revisiting 1,3-dipolar cycloaddition reactions between a porphyrinic azomethine ylide and a series of dipolarophiles.
Bruno M. F. Ladeira, Cristina J. Dias, Ana T. P. C. Gomes, Augusto C. Tomé, Maria G. P. M. S. Neves, Nuno M. M. Moura, Adelaide Almeida, M. Amparo F. Faustino   +7 more
doaj   +1 more source

Coinage Metal Complexes as Chiral Catalysts for 1,3-Dipolar Cycloadditions [PDF]

, 2014
In this account, we describe the experience of our research group in the implementation of chiral coinage metal complexes into the efficient enantioselective 1,3-DC of azomethine ylides derived from α-amino acids and azlactones with different ...
Nájera, Carmen, Sansano, Jose M.
core   +2 more sources