Results 111 to 120 of about 23,273 (217)

Synthesis of some isoxazoline, isoxazole and pyrazole carboxylic acids as the precursors of new 1,2-diacyl-1-alkylhydrazines [PDF]

open access: yes, 2013
A number of isoxazoline, isoxazole and pyrazole carboxylic acids or their esters has been synthesized via the 1,3-dipolar cycloaddition of corresponding nitrile oxides or diazomethane to unsaturated dipolarophiles.
Antonevich, I. P., Katok, Ya. M.
core  

Cyaphide-Azide 1,3-Dipolar Cycloaddition Reactions: Scope and Applicability. [PDF]

open access: yesChemistry, 2023
Yang ES   +4 more
europepmc   +1 more source

Synthesis of new A-conjugated Quinolone and Spiroindole Dammaranes by the Ozonolysis of 2,3-Indolodipterocarpol

open access: yesNatural Product Communications, 2018
An one-step and efficient access to the new dammarane A-quinolones by ozonolysis of 2,3-indolodipterocarpol at 0°C through the 1,3-dipolar cycloaddition of ozone to the C2-C3 double bond of the triterpenoid core is reported.
Irina E. Smirnova   +3 more
doaj   +1 more source

Copper(I)-catalyzed asymmetric 1,3-dipolar cycloaddition of 1,3-enynes and azomethine ylides. [PDF]

open access: yesNat Commun, 2023
Wang BR   +6 more
europepmc   +1 more source

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