Results 201 to 210 of about 5,350,209 (268)

Cycloaddition Reactions

2010
This chapter deals with enantioselective organocatalytic cycloaddition reactions. Several cinchona alkaloids have been recently demonstrated as efficient chiral organocatalysts for enantioselective Diels−Alder reactions. Thus, excellent results were obtained for the Diels−Alder reaction of 3-vinylindoles with maleimides catalysed by a ...
S. Araki, T. Hirashita
  +4 more sources

Retro‐Cycloaddition Reaction of Pyrrolidinofullerenes.

ChemInform, 2005
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Nazario, Martín, Margarita, Altable, Salvatore, Filippone, Angel, Martín-Domenech, Luis, Echegoyen, Claudia M, Cardona   +5 more
openaire   +2 more sources

Stereoselective [8 + 2] Cycloaddition Reaction of Azaheptafulvenes with α-Chloro Aldehydes via N-Heterocyclic Carbene Catalysis.

Organic Letters, 2019
A highly efficient [8 + 2] cycloaddition reaction of azaheptafulvenes with α-chloro aliphatic aldehydes enabled by N-heterocyclic carbene catalysis is presented, delivering cis-cycloheptatriene-fused γ-lactams with good yields, moderate to good ...
Chonglong He, Zhanhuan Li, Hongwei Zhou, Jianfeng Xu   +3 more
semanticscholar   +1 more source

Salen-Co(iii) insertion in multivariate cationic metal-organic frameworks for the enhanced cycloaddition reaction of carbon dioxide.

Chemical Communications, 2019
The salen-Co(iii) motif was inserted into imidazolium-functionalized multivariate cationic zirconium metal-organic frameworks (MOFs). The salen-Co(iii), as a Lewis acid site, and the Br- of imidazolium, as a nucleophile, are synergistically catalytic for
Taotao Liu, Jun Liang, Rui Xu, Yuan–Biao Huang, R. Cao   +4 more
semanticscholar   +1 more source

Topochemical Azide-Alkyne Cycloaddition Reaction.

Accounts of Chemical Research, 2019
Topochemical reactions are solid-state reactions that transpire under the strict control of molecular packing in the crystal lattice. Due to this lattice control, these reactions generate products in a regio-/stereospecific manner and in very high yields.
K. Hema, K. M. Sureshan
semanticscholar   +1 more source

Copper-Catalyzed Asymmetric Reaction of Alkenyl Diynes with Styrenes by Formal [3 + 2] Cycloaddition via Cu-Containing All-Carbon 1,3-Dipoles：Access to Chiral Pyrrole-Fused Bridged [2.2.1] Skeletons.

Journal of the American Chemical Society, 2020
The generation of metal-containing 1,3-dipoles from metal carbenes represents a significant advance in 1,3-dipolar cycloaddition reactions. However, these transformations have so far been limited to reactions based on diazo compounds or triazoles as ...
Feng-Lin Hong, Yang‐Bo Chen, Siyu Ye, G. Zhu, Xinhai Zhu, Xin Lu, Rai‐Shung Liu, L. Ye   +7 more
semanticscholar   +1 more source

Autocatalytic Cycles in a Copper-Catalyzed Azide-Alkyne Cycloaddition Reaction.

Journal of the American Chemical Society, 2018
This work describes the autocatalytic copper-catalyzed azide-alkyne cycloaddition (CuAAC) reaction between tripropargylamine and 2-azidoethanol in the presence of Cu(II) salts. The product of this reaction, tris-(hydroxyethyltriazolylmethyl)amine (N(C3N3)
S. Semenov, Lee Belding, B. Cafferty, Maral P. S. Mousavi, Anastasiia M Finogenova, R. S. Cruz, Ekaterina V. Skorb, G. Whitesides   +7 more
semanticscholar   +1 more source

Cycloaddition Reaction of Spiro-Epoxy Oxindole with CO2 at Atmospheric Pressure Using Deep Eutectic Solvent

ACS Sustainable Chemistry and Engineering, 2018
Developing a strategy to synthesize an unprecedented and previously unknown organic molecule is especially appealing. The design, synthesis, and development of a new class of spiro-cyclic carbonates are reported.
R. Tak, P. Patel, S. Subramanian, R. Kureshy, Noor-ul H. Khan   +4 more
semanticscholar   +1 more source

Selective [2σ + 2σ] Cycloaddition Enabled by Boronyl Radical Catalysis: Synthesis of Highly Substituted Bicyclo[3.1.1]heptanes.

Journal of the American Chemical Society, 2023
In contrast to the traditional and widely-used cycloaddition reactions involving at least a π bond component, a [2σ + 2σ] radical cycloaddition between bicyclo[1.1.0]butanes (BCBs) and cyclopropyl ketones has been developed to provide a modular, concise,
Tao Yu, Jinbo Yang, Zhijun Wang, Z. Ding, Ming Xu, J. Wen, Liang Xu, Pengfei Li   +7 more
semanticscholar   +1 more source

Cycloaddition Reactions

2005
V. K. Aggarwal, J. Richardson, C. L. Winn   +2 more
  +8 more sources