Results 31 to 40 of about 19,238 (306)
Angewandte Chemie, EarlyView.The synthesis and catalytic properties of Ni(II) complexes, with the general formula Ni(NHC)[P(OR)3](Ar)Cl, are described. These air‐stable complexes are effective under mild conditions and low catalytic loading for the Suzuki‐Miyaura cross‐coupling for a range of electronically and sterically differentiated coupling partners.
Morgan E. John +9 more
wiley +2 more sources
Isoxazolium N-ylides and 1-oxa-5-azahexa-1,3,5-trienes on the way from isoxazoles to 2H-1,3-oxazines
Beilstein Journal of Organic Chemistry, 2014 Theoretical and experimental studies of the reaction of isoxazoles with diazo compounds show that the formation of 2H-1,3-oxazines proceeds via the formation of (3Z)-1-oxa-5-azahexa-1,3,5-trienes which undergo a 6π-cyclization.
Alexander F. Khlebnikov +6 more
doaj +1 more source
Mechanochemical Desymmetrization of Unbiased Bis- and Tris-alkynes to Access 3,5-Isoxazoles-Alkyne Adducts and Unsymmetrical Bis-3,5-isoxazoles** [PDF]
, 2023 A mechanochemical desymmetrization of symmetrical bis- and tris-alkynes by a controlled 1,3-dipolar cycloaddition reaction using nitrile oxide dipoles (NOs).
Cuccia, Louis A. +5 more
core +1 more source
Frontiers in Chemistry, 2019 Herein we report the use of Rhodiasolv© Polarclean as a novel polar aprotic solvent for the synthesis of decorated heterocycles via dipolar cycloaddition (isooxazoles) or intramolecular C–H functionalization processes (benzo-fused chromenes).
Francesco Ferlin +6 more
doaj +1 more source
Method of identifying inhibitors of glutathione S-transferase (GST) gene expression [PDF]
, 1999 Complementary DNA and genomic clones for three variants of GST-.pi. are disclosed. It is demonstrated that certain of these variants are overexpressed in gliomas, thereby indicating an involvement with that form of cancer.
Akande, Olanike +6 more
core +1 more source
Orbital: The Electronic Journal of Chemistry, 2020 Isoxazole is a five membered heterocyclic compound which is an azole with an oxygen atom next to nitrogen. The substituted isoxazole derivatives show various biological activities like antimicrobial, antiviral, anti-inflammatory, antioxidant, anticancer ...
Parul Setia, Ruchi Bharti, Renu Sharma
doaj +3 more sources
Синтез та деякі перетворення 5-ізоксазолілсульфонілхлоридів [PDF]
, 2017 The effect of the structure of 5-(benzylthio)isoxazoles on selectivity of the synthesis of 5-(chlorosulfonyl)isoxazoles has been determined. The chemical behavior in relation to amines has been described.Aim. To develop the methods for the synthesis of 5-
Boyko, O. M. +4 more
core +2 more sources
Synthesis of Fused Isoxazoles: A Comprehensive Review
Engineering ProceedingsPharmaceutically important isoxazoles are within the wide range of heterocycles. The isoxazole ring, being five-membered, is also found in many bioactive natural products in addition to synthetic drugs.
Niveditha N. Mallik +5 more
doaj +1 more source
Synthesis of Some Fused Pyrazoles and Isoxazoles
Molecules, 2000 The α-keto methylene group in 3,5-diaryl-2-cyclohexenones 2 and 3,5-diarylcyclohexanones 8 have been used to obtain fused pyrazoles and isoxazoles. The new compounds were characterized by IR and 1H-NMR spectral data.
Dandu Bhaskar Reddy +4 more
doaj +1 more source
Zanco Journal of Medical Sciences, 2023 Background and objective: Five-membered heterocycle compounds having single oxygen and nitrogen atom at adjacent positions are known as isoxazoles. Isoxazole compounds have a broad range of biological activities and therapeutic value.
Sarbast M. Ahmed +4 more
doaj