Results 131 to 140 of about 1,712,028 (279)
, 1969 Vice President Spiro T. Agnew's speech at the Spiro Theodore Agnew Scholarship fund dinner in Baltimore, MD, circa December 1969. Vice President Spiro T.
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Fast and Selective Photochemical Doping of Spiro‐OMeTAD
Small Methods, EarlyView.Sixty seconds of UV light converts spiro‐OMeTAD into its clean +1/+2 oxidized states while >98% of lithium is extracted into an aqueous phase by 12‐crown‐4. Proton‐tunable hydroxyl‐radical chemistry generates oxidants whose reduction potentials bracket the spiro2+/spiro3+ couple, providing thermodynamic oxidation‐state selectivity, as quantified by DFT.
Chang Min Choi, Hee Cheul Choi
wiley +1 more source
STUDIES ON SPIROHETEROCYCLES : SYNTHESIS OF NEW SPIRO 4- THIAZOLIDINONES AS POSSIBLE BIODYNAMICS [PDF]
Journal of Sciences, Islamic Republic of Iran, 1992 Spiro-4- thiazolidinones have been synthesized by the cyclocondensation of phthalazinyl hydrazones with cyclic ketones and substituted mercapto acetic acids. Compounds were screened for their antibacterial, antifungal and antihypertensive activity.
doaj
3,3-Disubstituted 1,5-diaryl-1,5-pentanediones as versatile intermediates for spiro heterocycles
, 2002 1670-1675The spiro heterocycles, spiro-4H-pyra pyrazolidinedione/isoxazolidinedione/ pyrimidinetrione/thioxopyrimidinedione and spiro-4H-pyran aminopyrazolidinone/ isoxazolidinone/ hydroxypyrimidinonel mercaptopyrimidinone have been prepared from 3,3 ...
Padmavathi, V +4 more
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Advances in Unconventional and Sustainable Synthetic Approaches to Benzopyran Scaffolds
The Chemical Record, EarlyView.This review provides a comprehensive and critical analysis of low‐impact synthetic methodologies reported in the last 8 years (2018–2026) for the construction of benzopyran‐derived scaffolds, such as coumarins, flavones, chromones, chromenes, and chromanes. The benzopyran scaffold is a versatile family of heterocycles found in a wide range of bioactive
Nathalia B. Sá +4 more
wiley +1 more source
Oxaziridines: Versatile Reagents in Modern Organic Synthesis
The Chemical Record, EarlyView.Being capable of transferring an O atom and N‐group/atom, oxaziridines are considered multitasking agents. These are employed for diverse organic transformations, such as epoxidation of olefins, α‐ and γ‐hydroxylation/amination of carbonyl compounds, oxidation of sulfides, [3+2]cycloaddition with unsaturated systems.
Ajeet Chandra +2 more
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Synthesis and Pd(II) Complexes of an Unsymmetric and Flexible Ferrocene Bisphosphine
Zeitschrift für anorganische und allgemeine Chemie, EarlyView.Insertion of flexible spacers into the pivotal C(ferrocene)P bonds in dppf increases flexibility of the resulting homologated ligands and lowers their tendency to coordinate as P,P′‐chelating ligands. To expand the family of flexible homologated analogs of 1,1′‐bis(diphenylphosphino)ferrocene, the unsymmetric bisphosphine 1‐(diphenylphosphino)‐1′‐[2 ...
Jakub Antala +3 more
wiley +1 more source
British Journal of Pharmacology, EarlyView.Abstract Opioids are prescribed widely for chronic pain despite well‐recognised risks and variable long‐term benefit, reflecting the lack of effective alternatives for many patients. Combination therapies offer a promising strategy to enhance efficacy whilst reducing side effects.
André Mouraux +26 more
wiley +1 more source
Licence Loss: Revocations of Residential Care Licences in Four Nordic Countries
Child &Family Social Work, EarlyView.ABSTRACT With placement in residential care, society assumes overall responsibility for a child's daily care, well‐being and development. How public authorities respond to poor care quality is of crucial importance. To guarantee quality care and minimise risks, welfare states increasingly develop different mechanisms and systems to supervise out‐of ...
David Pålsson +5 more
wiley +1 more source