Results 1 to 10 of about 5,247 (179)
Electrostatic Activation of Tetrazoles [PDF]
The Journal of Organic Chemistry, 2020 Photoactivation of tetrazoles to form nitrile imines primed for 1,3-dipolar cycloaddition reactions is of widespread utility in chemistry. In contrast, the corresponding thermal reactions usually possess prohibitively high barriers and have garnered ...
Doan, Vincent +3 more
core +5 more sources
Synthetic Communications, 2011 An easy access to various 5-aryl-1H-tetrazoles by a one-pot direct conversion of aldehydes to tetrazoles without the isolation of the intermediate nitriles using commercially available iodine as a catalyst is described.
M B Madhusudana Reddy, M A Pasha
exaly +2 more sources
Chemical Communications, 2020 We surprisingly found that combining the substrates of Ugi tetrazole reaction gives two different constitutional isomeric Ugi products A and B. A is the expected classical Ugi products whereas B is an isomeric product (‘atypical Ugi’).
Eman M. M. Abdelraheem +6 more
openaire +5 more sources
Tetrazoles: a new class of compound for crystallization modification [PDF]
, 2010 Tetrazoles are a class of organic compound often used as carboxylic acid analogues. This analogous behaviour is shown to extend to crystallization modification, that is, tetrazoles are also able to influence crystal growth and morphology although in a ...
Massi, Massimiliano +7 more
core +1 more source
Alkylation of 5‑Substituted 1H‑Tetrazoles via the Diazotization of Aliphatic Amines
, 2021 A new alkylation reaction of monosubstituted tetrazoles via the diazotization of aliphatic amines is reported. This method enables preferential formation of 2,5-disubstituted tetrazoles. A one-pot 1,3-dipolar cycloaddition/diazotization sequence starting
Guillaume Reynard (11286297) +1 more
core +2 more sources
Probing Polar-π Interactions Between Tetrazoles and Aromatic Rings [PDF]
, 2023 The heterocyclic tetrazole, a well-established bioisosteric replacement of carboxylic acid, plays an important role in medicinal chemistry. To deepen the functional understanding of tetrazoles in chemical sciences, it is essential to investigate the ...
Jie Jian +13 more
core +1 more source
Angewandte Chemie, EarlyView.Azidoborylene photolysis results in the isolation of a reactive C═B═N═C heterocumulene bearing an ambiphilic boron centre. Addition of 3O2 to this species results in the clean conversion to a unique example of a dioxaborirane. ABSTRACT Oxidation of the formal boron(0) complex MeCAAC2B in the presence of tetrabutylammonium azide leads to the formation ...
Hayley King +4 more
wiley +2 more sources
α-Amino acid-isosteric α-amino tetrazoles [PDF]
, 2016 The synthesis of all 20 common natural proteinogenic and 4 otherα-amino acid-isosteric α-amino tetrazoles has been accomplished, whereby the carboxyl group is replaced by the isosteric 5-tetrazolyl group. The short process involves the use of the key Ugi
Dömling, Alexander +4 more
core +1 more source
Concise Synthesis of Tetrazole Macrocycle [PDF]
Organic Letters, 2017 A concise two step synthesis of tetrazole containing macrocycles from readily accessible starting materials is presented. The first step comprises a chemoselective amidation of amino acid derived isocyanocarboxylicacid esters with unprotected symmetrical diamines to afford diverse α-isocyano-ω-amines. In the second step, the α-isocyano-ω-amines undergo
Abdelraheem +7 more
openaire +4 more sources
Prototropic tautomerism of 5-aryloxy-1(2)H-tetrazoles
, 2013 The structure of 5-(2,6-dimethylphenoxy)-1H- and 2H-tetrazoles together with those of 5-(2,6-diisopropyl-phenoxy)-1H and 2H-tetrazoles have been theoretically studied including absolute shieldings and energies.
Elguero, José, Alkorta, Ibon
core +1 more source