Results 141 to 150 of about 4,239 (193)

Natural 1,3‐Dipolar Cycloadditions

Angewandte Chemie International Edition, 2015
[3+2] in the wild: Biomimetic natural product syntheses and theoretical considerations have indicated that 1,3-dipolar cycloadditions take place in nature. Now, the structure, biosynthesis, and function of a heavily modified prenylated flavin cofactor have been elucidated.
Martin, Baunach, Christian, Hertweck
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Asymmetric 1,3-dipolar cycloadditions

Tetrahedron, 2007
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.
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1,3-Dipolar Cycloadditions in Aqueous Media

HETEROCYCLES, 2006
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.
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Boryl Azides in 1,3-Dipolar Cycloadditions

The Journal of Organic Chemistry, 2014
The 1,3-dipolar cycloaddition reaction of boron azides with alkynes has been investigated experimentally and computationally. At room temperature pinBN3 (pin = pinacolato) reacts with the strained triple bond of cyclooctyne with formation of an oligomeric boryl triazole.
Matthias, Müller, Cäcilia, Maichle-Mössmer, Holger F, Bettinger   +2 more
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1,3-Dipolare Cycloaddition

1994
Von Huisgen 1,2) wurde 1963 die 1,3-dipolare Cycloaddition 3–5) als Reaktionsprinzip zum Aufbau von Heterocyclen systematisiert. Man versteht darunter die Addition eines 1,3-Dipols 1, der aus den verschiedenen Kombinationen von Kohlenstoff-, Stickstoff- und Sauerstoffatomen bestehen kann und vier nicht dienische π-Elektronen umfast, an eine ...
Thomas Laue, Andreas Plagens
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1,3‐Dipolar cycloadditions to alkyldicyanamides

Recueil des Travaux Chimiques des Pays-Bas, 1981
AbstractThe 1,3‐dipoles 2,4,6‐trimethylbenzonitrile oxide and benzyl azide react with alkyldicyanamides (1) to give the 3,5‐disubstituted 1,2,4‐oxadiazoles 2 and the 1,5‐disubstituted tetrazole 4, respectively, by (3 + 2)‐cycloaddition. The structure of 4 has been determined by a single crystal X‐ray analysis.
P. H. Benders, D. N. Reinhoudt, D. M. W. van den Ham   +2 more
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1,3-dipolar cycloadditions to oxidopyraziniums

Tetrahedron Letters, 1987
Abstract 1,5-Dimethyl-3-oxidopyrazinium (6) undergoes cycloadditions with methyl acrylate, acrylonitrile, diethyl maleate, maleimide, methyl propiolate and diethyl acetylenedicarboxylate.
Miklos Kiss, John Russell-Maynard, John A. Joule   +2 more
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Concertedness of 1,3-dipolar cycloadditions

Journal of Chemical Education, 1984
The 1,3-dipolar cycloaddition is the union of a 1,3-dipole with a multiple bond system (a dipolarophile) to form a five-membered ring; the process is regarded as one of the most general methods for the synthesis of five-membered heterocycles.
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1,3-Dipolar Cycloaddition

2012
M. Terada, N. Momiyama
  +4 more sources

1,3-Dipolar Cycloadditions

2012
R. P. Singh, L. Deng
  +4 more sources