Synthesis and analysis of pheomelanin degradation products. 2

Patil, D.G.; Chedekel, Miles R.

doi:10.1021/jo00180a009

Cited by 67 publications

(37 citation statements)

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“…Electrochemical sensors based in aroylthioureas as ionophores have been successfully developed and some basic approaches to describe the interaction mechanism of the ionophore with the heavy metal ions have been investigated [5][6][7][8]. Thiourea compounds are very useful building blocks for the synthesis of a wide range of aliphatic macromolecular and heterocyclic compounds [9][10][11]. These compounds are remarkable chelating agents for analytical chemistry and a variety of metal complexes have been described in literature [12][13][14][15][16][17][18].…”

Section: Introduccionmentioning

confidence: 99%

Structural, vibrational and electronic characterization of 1-benzyl-3-furoyl-1-phenylthiourea: an experimental and theoretical study

et al. 2015

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1-benzyl-3-furoyl-1-phenylthiourea is a thiourea derivative synthesized and characterized by means of vibrational spectroscopy (IR and Raman) multinuclear NMR ( 1 H and 13 C) and elemental analysis. The geometrical parameters of this compound obtained from XRD studies were compared with the calculated values [B3LYP/6-311++G(d,p)] showing a good agreement. As determined by XRD analysis performed previously, the title compound exhibits the U-shape conformation with the C=O and C=S double bonds in anticlinal geometry. This conformational feature is mainly dictated by the substitution degree on the thiourea core and the ability of forming and intramolecular N-H···O=C hydrogen bond. The UV-visible absorption spectra of the compound in methanol solution were recorded and analyzed using time dependent density functional theory (TD-DFT). Molecular stability was investigated by applying the natural bond (NBO) analysis. Intermolecular interactions were evaluated by means of AIM approach. The calculated HOMO and LUMO energies show that the charge transfer occurs in the molecule. The molecular electrostatic potential map was calculated by DFT method. Non-linear optical (NLO) behavior of the title compound was investigated by determining of electric dipole moment, polarizability α, and hyperpolarizability β using B3LYP/6-311++G(d,p) approximation.

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Section: Introduccionmentioning

confidence: 99%

Structural, vibrational and electronic characterization of 1-benzyl-3-furoyl-1-phenylthiourea: an experimental and theoretical study

et al. 2015

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“…This standard 2-aminobenzothiazole synthesis proceeds via an ortho-thiocyanato-aniline intermediate, which undergoes ring closure by reaction with bromine. [16][17][18] For the following deamination we applied Chedekel's conditions 19,20 with sodium nitrite and phosphinic acid. The ether cleavage of the resulting methoxy-substituted benzothiazole 25 delivered the desired 4-chloro-6-hydroxybenzothiazole 26.…”

Section: Benzothiazolesmentioning

confidence: 99%

Synthesis and anti-oomycete activity of novel quinazolin- and benzothiazol-6-yloxyacetamides: Potent aza-analogs and five-ring analogs of quinoline fungicides

Beaudegnies

Quaranta

Kessabi

et al. 2016

Bioorganic & Medicinal Chemistry

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“…Benzothiazoles have been prepared from arylthioureas in the presence of bromine (Patil & Chedekel, 1984), while condensation of thiourea with halocarbonyl compounds forms 2-aminothiazoles (Bailey et al, 1996). Benzothiazoles have been prepared from arylthioureas in the presence of bromine (Patil & Chedekel, 1984), while condensation of thiourea with halocarbonyl compounds forms 2-aminothiazoles (Bailey et al, 1996).…”

Section: Commentmentioning

confidence: 99%