“Exploratory Study on the Electron Attractor Effect Towards the Preference of Pyrazolinic Ring Cyclization in an a,β-Diunsaturated System”.
DOI:
https://doi.org/10.54495/Rev.Cientifica.v17i1.222Keywords:
Exploratory study, Electron attractor effect, a,β-Diunsaturated SystemAbstract
This is an exploratory study to determine the cyclization preference in the formation of the pyrazoline product of the reaction between the compound 4-phenyl-1-(1,3-dithiolan-2-ethenyl)-3-buten-2-one and hydrazine. , towards the position neighboring the aromatic ring or to the position neighboring the dithiolan heterocycle.
To determine if the electronic density is decreased on positions 1 and 2 of the compound chain, aromatic ring substrates with electron-attracting groups were used, these being: bromine in ortho position and nitro in meta and para positions, all of them deactivating the electron cloud pi(n). By decreasing the electron density, it was expected to obtain a greater amount of product.
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Copyright (c) 2004 C.A. Morales, D.E. Pinagel
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