Results 41 to 50 of about 4,108 (208)
Synthesis of enones, pyrazolines and pyrrolines with gem-difluoroalkyl side chains
Beilstein Journal of Organic Chemistry, 2013 Starting from easily accessible gem-difluoropropargylic derivatives, a DBU-mediated isomerisation affords enones in fair yields with a gem-difluoroalkyl chain.
Assaad Nasr El Dine +8 more
doaj +1 more source
Medical Sciences Forum, 2022 Four new series of aromatic sulfamates were synthesized and investigated for the inhibition of four human (h) isoforms of zinc enzyme carbonic anhydrase, hCA I, II, IX, and XII.
Davide Moi
doaj +1 more source
Reactivity of 4-tert-Butyldimethylsiloxy-1,2,3,6-tetrahydropyridines with Hydrazines
Molecules, 2006 The reactivity of 6-(nitrophenyl or trimethoxyphenyl)-4-tert-butyldimethyl- siloxy-1,2,3,6-tetrahydropyridine derivatives with hydrazines under acid conditions is described.
Manuel Medarde +4 more
doaj +1 more source
Komplexchemie perhalogenierter Cyclopentadiene und Alkine, VII [PDF]
, 1990 Coordination Chemistry of Perhalogenated Cyclopentadienes and Alkynes, VII1). - Synthesis of Several Tetrachlorometalloles of Cobalt, Rhodium, and Iridium; Structure of a Iridacyclopentadiene Derivative The reaction of dichloroethyne with CpCo(PPh3)2 ...
Clarke +15 more
core +2 more sources
Synthesis and Crystal Structures of 4,5-Dihydroimidazo[1,5-b]pyrazol-6-ones
SynOpen, 2020 The synthesis of previously unattainable 2,5-disubstituted 4,5-dihydroimidazo[1,5-b]pyrazol-6-ones has been developed. Electrochemical reductions of readily available 2,2,2-trichloroethylideneacetophenones were followed by reaction with hydrazine ...
Antonio Guirado +6 more
doaj +1 more source
Photochemical Synthesis of Pyrazolines from Tetrazoles in Flow
SynOpen, 2023 Pyrazolines and their pyrazole congeners are important heterocyclic building blocks with numerous applications in the fine chemical industries. However, traditional routes towards these entities are based on multistep syntheses generating substantial ...
Adam Burke +3 more
doaj +1 more source
Angewandte Chemie, Volume 138, Issue 3, 16 January 2026.Dieser Mini‐Review behandelt die neuesten Fortschritte bei der Synthese, Reaktivität und metallfreien katalytischen Verwendung von mesoionischen N‐heterocyclischen Olefinen (mNHOs), Iminen (mNHIs), Thionen (mNHTs) und Phosphinidenen (mNHPs). Kurzzusammenfassung Übergangsmetallverbindungen sind allgemein für ihre Fähigkeit bekannt, kleine Moleküle zu ...
Subir Maji +3 more
wiley +1 more source
Synthesis and tautomerism of spiro-pyrazolines [PDF]
Tetrahedron Letters, 2014 An experimental study on the synthesis, tautomerism and acid promoted structural changes of spiro-pyrazolines is described. The target was achieved through a [3+2]-dipolar cycloaddition of an alkene with nitrile imines generated in situ and was isolated in high yield.
Sureshbabu, Dadiboyena +2 more
openaire +2 more sources
Matrix Metalloproteinase Inhibition in Melanoma
Experimental Dermatology, Volume 35, Issue 1, January 2026.ABSTRACT Matrix metalloproteinases (MMPs) are involved in the degradation of the extracellular matrix (ECM) and are found to participate in all stages of tumour progression including modifying signalling pathways, regulating cytokines and promoting tumour growth, particularly by inducing angiogenesis and facilitating cancer spread.
Ellie Zhang +2 more
wiley +1 more source
Catalytic Strategies for Amide‐Based Michael Additions: Advances and Perspectives
Journal of Chemistry, Volume 2026, Issue 1, 2026.The Michael addition is a cornerstone transformation in organic synthesis, enabling efficient C–C and C–heteroatom bond formation. Traditionally, α,β‐unsaturated carbonyl compounds such as enones and esters have dominated as Michael acceptors, whereas α,β‐unsaturated amides remain underutilized due to their strong resonance stabilization and low ...
Muhammad Naufal +6 more
wiley +1 more source