Results 21 to 30 of about 30,808 (260)

The azomethine ylide route to amine C-H functionalization: redox-versions of classic reactions and a pathway to new transformations. [PDF]

Acc Chem Res, 2015
Conspectus Redox-neutral methods for the functionalization of amine α-C–H bonds are inherently efficient because they avoid external oxidants and reductants and often do not generate unwanted byproducts. However, most of the current methods for amine α-C–
Seidel D.
europepmc   +2 more sources

Unexpected Course of Reaction Between (1E,3E)-1,4-Dinitro-1,3-butadiene and N-Methyl Azomethine Ylide—A Comprehensive Experimental and Quantum-Chemical Study [PDF]

Molecules
In recent times, interest in the chemistry of conjugated nitrodienes is still significantly increasing. In particular, the application of these compounds as building blocks to obtain heterocycles is a popular object of research.
Mikołaj Sadowski, Karolina Kula
doaj   +2 more sources

Azomethine Ylides—Versatile Synthons for Pyrrolidinyl-Heterocyclic Compounds

Molecules, 2023
Azomethine ylides are nitrogen-based three-atom components commonly used in [3+2]-cycloaddition reactions with various unsaturated 2π-electron components.
Siva S. Panda, Marian N. Aziz, Jacek Stawinski, Adel S. Girgis   +3 more
doaj   +3 more sources

Recent Developments in Azomethine Ylide-Initiated Double Cycloadditions [PDF]

Molecules
Azomethine ylides (AMYs) have a nitrogen–carbon double bond and an electron lone pair on the nitrogen atom. They are essential 1,3-dipoles for [3+2] cycloadditions in the synthesis of pyrrolidine-containing heterocycles.
Tieli Zhou, Xiaofeng Zhang, Yan Jan Sheng, Desheng Zhan, Wei Zhang   +4 more
doaj   +2 more sources

New Conjugatable Platinum(II) Chlorins: Synthesis, Reactivity and Singlet Oxygen Generation [PDF]

Molecules
An efficient protocol was developed for the microwave-mediated metallation of 5-(4-methoxycarbonylphenyl)-10,15,20-tris(pentafluorophenyl)porphyrin (P1) with bis(benzonitrile)platinum dichloride salt and subsequent 1,3-dipolar cycloaddition of the ...
José Almeida, Giampaolo Barone, Luís Cunha-Silva, Ana F. R. Cerqueira, Augusto C. Tomé, Maria Rangel, Ana M. G. Silva   +6 more
doaj   +2 more sources

Internal azomethine ylide cycloaddition methodology for access to the substitution pattern of aziridinomitosene A. [PDF]

J Org Chem, 2007
Bobeck DR, Warner DL, Vedejs E.
europepmc   +3 more sources

Metal-free α-amination of secondary amines: computational and experimental evidence for azaquinone methide and azomethine ylide intermediates. [PDF]

J Org Chem, 2013
Dieckmann A, Richers MT, Platonova AY, Zhang C, Seidel D, Houk KN.   +5 more
europepmc   +2 more sources

Synthesis of Novel Benzofuran Spiro-2-Pyrrolidine Derivatives via [3+2] Azomethine Ylide Cycloadditions and Their Antitumor Activity. [PDF]

Int J Mol Sci
Pan B, Wang T, Zheng L, Dong Z, Liu L, Liu X, Feng T, Zhou Y, Shi Y.   +8 more
europepmc   +2 more sources

Polar [3+2] cycloaddition between N-methyl azomethine ylide and trans-3,3,3-trichloro-1-nitroprop-1-ene

Scientiae Radices, 2022
Pyrrolidines are important heterocyclic organic compounds which show biological effects. Many of them are successfully used in medicine. These compounds can also be applied in industry, for example as dyes or agrochemical substances. Therefore, the study
Magdalena Żmigrodzka, Mikołaj Sadowski, Jowita Kras, Ewa Desler, O. Demchuk, Karolina Kula   +5 more
semanticscholar   +1 more source

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