Results 11 to 20 of about 7,931 (260)

Decarboxylation-Driven Double Annulations: Innovative Multi-Component Reaction Pathways [PDF]

Molecules
A concerted five-component reaction strategy has been developed, featuring double [3+2] cycloadditions utilizing aspartic acid. This approach provides valuable insights into mechanistic pathways, allowing for the distinction between concerted and ...
Desheng Zhan, Gang Yang, Tieli Zhou, Sashirekha Nallapati, Xiaofeng Zhang   +4 more
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Regiospecific 1 ,3-Dipolar Cycloaddition Polymerization of Keto-Stabilized Bisalkylidenephosphoranes with Bisazides

, 1972
Department of Chemistry, Laboratory of Macromolecular and Organic Chemistry, University of Louvain, B-3030 Heverlee, Belgium Received 4 September 1972 Thennostable poly-1,2,3-triazoles (7) were prepared by the regiospecific rt:action of bisazides with. keto-stabilhed bisalkylidenephosporanes (6) in DMSO solution.
Pierre A Ykman, G. L' ABBE, G. SMETS
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Stereoselective synthesis of fused tetrahydroquinazolines through one-pot double [3 + 2] dipolar cycloadditions followed by [5 + 1] annulation

Beilstein Journal of Organic Chemistry, 2016
The one-pot [3 + 2] cycloaddition of an azomethine ylide with a maleimide followed by another [3 + 2] cycloaddition of an azide with the second maleimide gives a 1,5-diamino intermediate which is used for a sequential aminomethylation reaction with ...
Xiaofeng Zhang, Kenny Pham, Shuai Liu, Marc Legris, Alex Muthengi, Jerry P. Jasinski, Wei Zhang   +6 more
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1, 3-Dipolar Cycloaddition of Furancarbonitrile Oxide with Olefins

Nippon kagaku zassi, 1967
Tadashi Sasaki
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Structure, liquid and solid state synthesis for dimers via [3+3] dipolar cycloadditions [PDF]

ARKIVOC, 2005
Gheorghita N. Zbancioc, Maria C. Caprosu, Costel C. Moldoveanu, Ionel I. Mangalagiu   +3 more
doaj   +2 more sources

Gram Scale Synthesis of (±)-Gregatin A via 1, 3-dipolar Cycloaddition Strategy [PDF]

Yiming Ding, Xiaoli Zhao, Chunlei Qu, Xianwen Long, Yaqiu Zhao, Xiaodong Yang, Haixiang Shen, Jun Deng   +7 more
openalex   +2 more sources

[3+2] Cycloaddition of alkyl aldehydes and alkynes enabled by photoinduced hydrogen atom transfer

Nature Communications, 2022
In contrast to the prevalence of 1,3-dipolar cycloadditions, radical [3+2] annulations of alkynes are underexplored. Here, the authors describe [3+2] cycloadditions of various internal alkynes with readily accessible aliphatic aldehydes via photoinduced ...
Siya Le, Ji Li, Jian Feng, Zuxiao Zhang, Yihui Bai, Zheliang Yuan, Gangguo Zhu   +6 more
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Studies on the [2+3] cycloaddition reaction of nitrile oxides to abietic acid esters [PDF]

Journal of the Serbian Chemical Society, 2019
[2+3] Dipolar cycloadditions of aromatic nitrile oxides to abietic acid esters were investigated. The reactions showed complete site selectivity and regioselectivity, while the stereoselectivity depended on the structures of the dipolarophiles.
Gucma Mirosław, Gołębiewski Marek W., Żelechowski Krzysztof, Krawczyk Maria   +3 more
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Reaction profiles for quantum chemistry-computed [3 + 2] cycloaddition reactions

Scientific Data, 2023
Bio-orthogonal click chemistry based on [3 + 2] dipolar cycloadditions has had a profound impact on the field of biochemistry and significant effort has been devoted to identify promising new candidate reactions for this purpose.
Thijs Stuyver, Kjell Jorner, Connor W. Coley   +2 more
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Discovery of new mutually orthogonal bioorthogonal cycloaddition pairs through computational screening. [PDF]

, 2015
Density functional theory (DFT) calculations and experiments in tandem led to discoveries of new reactivities and selectivities involving bioorthogonal sydnone cycloadditions.
Houk, KN, Liang, Yong, Murphy, Jennifer M, Narayanam, Maruthi Kumar   +3 more
core   +1 more source