Results 61 to 70 of about 1,953 (209)
β-Nitrostyrenes underwent a Diels–Alder reaction with Danishefsky’s diene to afford cyclohexenes together with the corresponding hydrolyzed products, 3-arylated-5-methoxy-4-nitrocyclohexanones.
Haruyasu Asahara +2 more
doaj +1 more source
POLYFUNCTIONALITY OF THE TERM IN MODERN TERMINOLOGY
In the present paper, we characterize a term as a multifunctional phenomenon and define the system of its functions that is quite complicated, and even more complex than the corresponding system of a non-term (commonly used word). For instance, any term performs the sign function.
openaire +2 more sources
Alkoxyallenes in Modern Synthesis: Reactivity, Catalysis, and Complexity Generation
The last decade has witnessed a remarkable transformation in alkoxyallene chemistry. Although historically employed as synthetic equivalents of acrolein or as versatile 3C synthons, alkoxyallenes are now increasingly recognized as highly adaptable platforms for synthetic design.
A. Lanfranco +5 more
wiley +1 more source
A New Valuable Synthesis of Polyfunctionalized Furans Starting from β-Nitroenones and Active Methylene Compounds [PDF]
Highly functionalized furans are the key scaffolds of many pharmaceuticals and bioactive natural products. Herein, we disclose a new fruitful synthesis of polyfunctionalized furans starting from beta-nitroenones and alpha-functionalized ketones.
Serena Gabrielli +3 more
core +1 more source
Synthesis of 3,5‐Diarylated 4‐Cyano‐2‐nitrophenols via Nitro Rearrangement
A practical synthetic route to 3,5‐diaryl‐4‐cyano‐2‐nitrophenols, a class of unsymmetrically substituted and densely functionalized phenols, is provided. The key transformation is a nitro rearrangement of 4‐cyano‐4‐nitrocyclohexanone derivatives, which were prepared from di(benzylidene)acetones through cyano(nitro)methylation.
Nagatoshi Nishiwaki +3 more
wiley +1 more source
Polyfunctionalized pyrrole 6 is synthesized in the ring transformation of N-hydroxy-3,5-dinitro4-pyridone 4 with enolate 2 derived from diethyl 3-oxogulutarate. The present reaction proceeds with C-N transfer from 4 to 2, which is hitherto unknown manner
NISHIWAKI, Nagatoshi +6 more
core +1 more source
We have developed a visible‐light‐driven, transition‐metal‐free protocol for the chemodivergent borocarbonylation of trifluoromethyl styrenes which integrates radical 1,2‐boron migration, CO trapping, and intermolecular C–C bond formation into a single multicomponent cascade.
Xiao‐Fan Cui +2 more
wiley +1 more source
Polyfunctionality and inflectional economy
This paper serves two purposes. It is a summary of much work concerning One compelling kind of evidence for the autonomy of a language’s morphology is the incidence of inflectional polyfunctionality, the systematic use of the same morphology to express distinct but related morphosyntactic content.
openaire +2 more sources
Ni‐catalyzed cross‐electrophile coupling (XEC) of aryl iodides with benzyl chlorides proceeds efficiently in the deep eutectic solvent (DES) choline chloride/urea, replacing hazardous amide solvents. Under mild, aerobic, heterogeneous conditions, diarylmethanes form in up to 95% yield.
Andrea Nicola Paparella +7 more
wiley +1 more source
Polyfunctionalized β-fluoropyrrole can be readily prepared from rhodium(II) acetate-catalyzed intramolecular N−H insertion reaction of δ-amino-γ,γ-difluoro-α-diazo-β-ketoesters.
Shizheng Zhu (1963603) +1 more
core +1 more source

