Results 221 to 230 of about 43,074 (261)
Some of the next articles are maybe not open access.
Chiral ScIII-N,N'-Dioxide-Catalyzed 1,3-Dipolar Cycloaddition of Diaziridines with Chalcones.
Organic Letters, 2019A highly enantioselective 1,3-dipolar cycloaddition of meso-diaziridines with chalcones was realized by utilizing the ScIII-N,N'-dioxide complex as the catalyst. In this transformation, the 1,3-dipole intermediates generated from the C-N bond cleavage of
Haipeng Hu +5 more
semanticscholar +1 more source
1,3-Dipolar Cycloadditions in Aqueous Media
HETEROCYCLES, 2006AbstractChemInform 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.
openaire +4 more sources
ChemInform Abstract: Enantioselective Copper‐Catalyzed 1,3‐Dipolar Cycloadditions
ChemInform, 2008AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Levi M. Stanley, Mukund P. Sibi
openaire +4 more sources
What Controls the Reactivity of 1,3‐Dipolar Cycloadditions?
Angewandte Chemie International Edition, 2009AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Bernd Engels, Manfred Christl
openaire +4 more sources
1,3‐Dipolar Cycloadditions to Strained Olefins
Helvetica Chimica Acta, 1979AbstractThe Bredt olefins bicyclo [3.3.1]non‐1‐ene (2), bicyclo [4.2.1]non‐1 (8)‐ene (3), and bicyclo [4.2.1]non‐1 (2)‐ene (4) react rapidly with 1,3‐dipoles such as diazomethane, phenyl azide, and mesitonitrile oxide to yield mixtures of two regioisomeric cycloadducts 10, 11 and 12, respectively.
Martin K. Hohermuth, Konrad B. Becker
openaire +3 more sources
ChemInform Abstract: 1,3‐Dipolar Cycloaddition Reactions of Levoglucosenone.
ChemInform, 1992AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Alexander J. Blake +4 more
openaire +3 more sources
ChemInform Abstract: 1,3‐Dipolar Cycloaddition Reactions of Benzylidenecyanoamines.
Chemischer Informationsdienst, 1982AbstractEinige inter und intramolekulare Cycloadditionsreaktionen der Benzylidencyanobenzylamine (I) werden beschrieben.
Kazunori Ueno, Otohiko Tsuge
openaire +2 more sources
Intramolecular 1,3‐Dipolar Cycloaddition Reactions
Angewandte Chemie International Edition in English, 1976AbstractThe intramolecular 1,3‐dipolar cycloaddition reaction of suitably functionalized 1,3‐dipoles represents a general scheme for the synthesis of novel fused ring heterocycles. Such reactions of a number of 1,3‐dipoles are summarized and the general outline and potential analogies for these reactions noted. While the immediate aim of this review is
openaire +3 more sources
1,3‐Dipolar cycloadditions to alkyldicyanamides
Recueil des Travaux Chimiques des Pays-Bas, 1981AbstractThe 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.
D. M. W. van den Ham +2 more
openaire +2 more sources
ChemInform Abstract: 1,3‐Dipolar Cycloadditions to Nitrogen‐Substituted Allenes.
ChemInform, 1990AbstractOn reaction with the nitrile oxide (II) the title compounds (I) (8 examples) form the monoadducts (III)‐(V) and the diadduct (VI).
BROGGINI, GIANLUIGI +3 more
openaire +4 more sources