Results 161 to 170 of about 93,979 (223)

Atroposelective Synthesis of Axially Chiral Naphthylpyrroles by a Catalytic Asymmetric 1,3-Dipolar Cycloaddition/Aromatization Sequence. [PDF]

Org Lett
Maclean I, Gallent E, Orozco O, Molina A, Rodríguez N, Adrio J, Carretero JC.   +6 more
europepmc   +1 more source

Density Functional Theory Calculations: A Useful Tool to Investigate Mechanisms of 1,3-Dipolar Cycloaddition Reactions. [PDF]

Int J Mol Sci
Chiacchio MA, Legnani L.
europepmc   +1 more source

Diazomethyl-λ³-iodane meets aryne: dipolar cycloaddition and C-to-N iodane shift leading to indazolyl-λ³-iodanes. [PDF]

Chem Sci
Otsuki S, Kanemoto K, Martos DC, Kwon E, Wencel-Delord J, Yoshikai N.   +5 more
europepmc   +1 more source

Study on Regio- and Diastereoselectivity of the 1,3-Dipolar Cycloaddition Reaction of Azomethine Ylide with 2-(Benzo[d]thiazol-2-yl)-3-(aryl)acrylonitrile: Synthesis, Spectroscopic, and Computational Approach. [PDF]

ACS Omega
Hussein EM, Moussa Z, Al-Fahemi JH, Al-Rooqi MM, Obaid RJ, Malik MS, Abd-El-Aziz AS, Ahmed SA.   +7 more
europepmc   +1 more source

Ethynyl-substituted benzosiloxaboroles: the role of C(π)⋯B interactions in their crystal packing and use in Cu(i)-catalyzed 1,3-dipolar cycloaddition. [PDF]

RSC Adv
Pacholak P, Durka K, Woźniak K, Krajewska J, Laudy AE, Luliński S.   +5 more
europepmc   +1 more source

Dipolar Cycloaddition Reactions of Nitrilimines

Australian Journal of Chemistry, 1998
A series of ?-substituted a-methylidene-?-butyrolactone derivatives underwent regiospecific 1,3-dipolar cycloaddition with N -methyl- C -phenylnitrilimine. These reactions proceeded regiospecifically and with high diastereoselectivity, generally favouring the anti diastereomer as determined by n.m.r.
Dunstan, J., Elsey, G., Russell, R., Savage, G., Simpson, G., Tiekink, E.   +5 more
openaire   +3 more sources

Some of the next articles are maybe not open access.

Related searches:

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
openaire   +2 more sources

1,11-Dipolar cycloaddition

Journal of the Chemical Society, Chemical Communications, 1972
2-Methylnaphtho[1,8-de]triazine undergoes 1,11-dipolar (12π+ 2π) cycloaddition to acetylenic esters to give 2-methylacenaphtho[5,6-de]triazines, after spontaneous dehydrogenation.
C. W. Rees, R. W. Stephenson, R. C. Storr   +2 more
openaire   +1 more source

Extended dipolar cycloadditions

Journal of the Chemical Society, Perkin Transactions 1, 1975
Whilst the simple azomethine imine (5) undergoes the expected 1,3-dipolar cycloaddition to acetylenic esters, the extended azomethine imines (1) undergo 1,5-rather than 1,3-dipolar cycloaddition to give benzo[c][1,2,5]-triazepino[1,2-a]cinnolines (2), possibly by a stepwise mechanism 2-Alkyl-2λ5σ3-naphtho[1,8-de]triazines (12) and 2λ4σ2-naphtho[1,8-cd ...
Stephanie F. Gait, Michael J. Rance, Charles W. Rees, Reginald W. Stephenson, Richard C. Storr   +4 more
openaire   +1 more source

Nanoparticle‐Catalysed 1,3‐Dipolar Cycloadditions

European Journal of Organic Chemistry, 2020
The 1,3‐dipolar cycloadditions of azomethine‐ylides and ‐imines, nitrones, nitrilimines, and azides catalysed by inorganic nanoparticles are described. Emphasis is given to the nanometric catalysts involved, their structure, characterisation, and recyclability and, when remarkable, their preparation.
Ponti A, Molteni G
openaire   +2 more sources