Results 71 to 80 of about 5,904 (191)
Síntese regiosseletiva de cristais líquidos contendo o heterociclo isoxazol [PDF]
, 2008 Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Físicas e Matemáticas. Programa de Pós-Graduação em QuímicaMoléculas com características líquido-cristalinas têm ultimamente atraído um grande interesse por parte de ...
Bryk, Fernando Rebouças
core
Metal-Free Sequential [3 + 2]-Dipolar Cycloadditions using Cyclooctynes and 1,3-Dipoles of Different Reactivity [PDF]
, 2016 Although metal-free cycloadditions of cyclooctynes and azides to give stable 1,2,3-triazoles have found wide utility in chemical biology and material sciences, there is an urgent need for faster and more versatile bioorthogonal reactions.
Brian C. Sanders (2234539) +8 more
core +1 more source
European Journal of Organic Chemistry, Volume 29, Issue 26, 13 July 2026.An approach to prepare pyrido[2,1‐a]isoindoles via the cycloaddition of pyridine‐based 1,3‐dipoles and benzyne is described, offering modular access to a range of substituted products by systematic tuning of the dipole. A modular strategy for the synthesis of fused indolizine/isoindole hybrids, pyrido[2,1‐α]isoindoles, via cycloaddition of pyridine ...
Samira Taghizadeh Nodehi +2 more
wiley +1 more source
1,3-Dipolar Cycloadditions of Diazo Compounds in the Presence of Azides [PDF]
, 2016 The diazo group has untapped utility in chemical biology. The tolerance of stabilized diazo groups to cellular metabolism is comparable to that of azido groups. However, chemoselectivity has been elusive, as both groups undergo 1,3-dipolar cycloadditions
Matthew R. Aronoff (2564260) +2 more
core +1 more source
Chemistry – A European Journal, Volume 32, Issue 26, 11 July 2026.Monosubstituted N‐arylhydroxylamines represent a unique subclass of hydroxylamines that act as pivotal intermediates in redox transformations and as versatile platforms for further synthetic transformations. They serve as key building blocks in the synthesis of architecturally complex heterocycles and other valuable organic compounds.
Michael G. Kallitsakis +2 more
wiley +1 more source
Chemical and Pharmaceutical Bulletin, 1973 1, 3-Dipolar cycloaddition of aldehyde hydrazones with dimethyl acetylenedicarboxylate without solvent gives rise to dimethyl 1, 3-diphenylpyrazole-4, 5-dicarboxylate, and in some cases trimethyl 1-phenylpyrazole-3, 4, 5-tricarboxylate as a by-product.
OGURA, HARUO +3 more
openaire +2 more sources
Batteries From Reused, Recycled, and Surplus Materials
Advanced Sustainable Systems, Volume 10, Issue 7, July 2026.Batteries can become more circular by combining reuse, direct recycling, metallurgical recovery, and material sourcing from industrial surplus streams. This Review highlights how recycled and waste‐derived metals, carbons, polymers, electrolytes, and active materials can be reintegrated into current and emerging batteries, while emphasizing design ...
Jing Yu +16 more
wiley +1 more source
Novel (3+2) dipolar cycloadditions of pyridinium ylides [PDF]
This thesis describes advances in novel (3+2) dipolar cycloadditions of pyridinium ylides, their reactions with electrophilic alkenes afford tetrahydroindolizines which can possess alkaloid-like scaffolds.
Tongue, Tom
core
Transition metal complexation in 1,3-dipolar cycloadditions [PDF]
, 2003 Transition metal complexation of organic molecules is becoming common in the field of 1,3-dipolar cycloadditions as a successful methodology to increase reactivities and to control selectivities. The literature data on this subject are here reviewed in a
G. Broggini +3 more
core
Advanced Science, Volume 13, Issue 38, 9 July 2026.ABSTRACT Orthogonal translation systems (OTSs) enable site‐specific incorporation of non‐canonical amino acids (ncAAs) and are central to genetic code expansion. Current engineering strategies typically rely on hyperstable aminoacyl tRNA synthetase (aaRS) scaffolds to tolerate destabilizing mutations required for substrate diversification.
Nikolaj G. Koch +4 more
wiley +1 more source