Nitroimidazoles XIII. Synthesis of Substituted (1-Methyl-5-Nitro-2-Imidazolyl) Isoxazoles [PDF]
The beta0diketone derivatives of nitroimidazole were synthesized from the reaction of magnesium salt of beta-ketoaccids 3 with imidazolide 4. The raction of beta-diketones with hydroxylamine hydrochloride afforded either the isoxazoles or the 5-hydroxyl ...
Abbas Shafiee, Mohammad ALi Ebrahimzadeh
doaj
N–O Cleavage reactions of heterobicycloalkene-fused 2-isoxazolines
Transition metal-mediated N–O bond cleavage reactions of heterobicycloalkene-fused 3-methyl-2-isoxazolines were investigated. Optimal cleavage conditions were found with Raney nickel/AlCl3 mediation in aqueous methanol.
Jaipal R. Nagireddy+3 more
doaj +1 more source
Synthetic Studies Directed Toward Streptenol D: Enantioselective Preparation of the 3,5-diacetoxy-6\u3cem\u3eE\u3c/em\u3e,8\u3cem\u3eE\u3c/em\u3e-decadiene Segment [PDF]
The enantioselective preparation of 2-(3′R,5′R-diacetoxy-6E,8E-decadienyl)-1,3-dioxane, (+)-13, is described. This synthesis of the skeleton of streptenol D utilizes the ability of a diene-complexed (tricarbonyl)iron unit to serve as a protecting and ...
Dasgupta, Bireshwar, Donaldson, William
core +1 more source
Asymmetric Lewis acid-catalyzed 1,3-dipolar cycloadditions [PDF]
Highly tuned, one-point binding chiral iron and ruthenium complexes selectively coordinate and activate α,β-unsaturated aldehydes and ketones toward asymmetric catalytic Diels-Alder cycloaddition reactions.
Brinkmann, Yasmin+3 more
core
Aryl nitrile oxide cycloaddition reactions in the presence of pinacol boronic acid ester
An aryl substrate with dual functionality consisting of a nitrile oxide and a pinacolyl boronate ester was prepared by mild hypervalent iodine oxidation (diacetoxyiodobenzene) of the corresponding aldoxime, without decomposition of the boronate ...
Sarah L. Harding+2 more
doaj +1 more source
Optimising systemic insecticide use to improve malaria control
BackgroundLong-lasting insecticidal nets and indoor residual sprays have significantly reduced the burden of malaria. However, several hurdles remain before elimination can be achieved: mosquito vectors have developed resistance to public health ...
Hannah R Meredith+2 more
doaj +1 more source
Synthesis of (2-fluorophenyl) and (4-fluorophenyl)-(2-nitromethyl)-methanones as precursors of fluorinated prostanoids [PDF]
The synthesis of new fluorinated primary nitrocompounds ?(2-fluorophenyl)and (4-fluorophenyl)-(2-nitromethylcyclopentyl)methanones has been realized by the nitromethane 1,4-addition to 1-acylcyclopentenes, available by the reductive cleavage of ...
Antonevich, I. P.+2 more
core
Synthesis and Reactivity of Acyclic (pentadienyl)iron(1+) Cations: Model Studies for the Preparation of the 8\u3cem\u3eE\u3c/em\u3e,10\u3cem\u3eZ\u3c/em\u3e,16\u3cem\u3eE\u3c/em\u3e,18\u3cem\u3eE\u3c/em\u3e-Tetraene Segment of Macrolactin A [PDF]
The dicarbonyl(1,2-dimethylpentadienyl)triphenylphosphineiron(1+) cation (11) has been prepared from methyl 4-methyl-2E,4E-hexadienoate in four steps.
Donaldson, William+2 more
core +1 more source
Orthogonal, metal-free surface modification by strain-promoted azide–alkyne and nitrile oxide–alkene/alkyne cycloadditions [PDF]
In this article we present a fast and efficient methodology for biochemical surface patterning under extremely mild conditions. Micropatterned azide/benzaldoxime-surfaces were prepared by microcontact printing of a heterobifunctional cyclooctyne oxime ...
Arlinghaus, Heinrich F+6 more
core +1 more source
Studies on Spiroheterocyclic Nitrogen Compounds. Part 1 : Synthesis of Some New Spiro Pyrazolines, Isoxazolines and Pyrimidinethiones Containing Benzanilide Moiety [PDF]
B. E. BAYOUMY+2 more
openalex +1 more source