Ahmed S. Profile

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Chemistry Tutoring

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Lihat semua Chemistry Tutors dalam Spain

Ahmed S.

@ahmedsheta201020

5.0

1.9

100%

PhD in chemistry

$5 USD / Jam

・

Spain (7:03 PTG)

・

Menyertai pada Julai 2, 2022

$5 USD / Jam

・

Practical chemistry, organic and inorganic synthesis, electrochemical techniques, writing scientific papers and reports.

Perubahan disimpan

5.0 · 1 Review

Ulasan

IR,NMR and Mass specturm analysis

• £70 GBP

I had a great experience with ahmed.

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Chemistry Tutoring

Zainab A.

@alhaj625

•

Feltham, United Kingdom

•

2 tahun yang lalu

Kongsi

Predoctoral Research Associate

Apr, 2021 - Sekarang

•

3 tahun, 5 bulan

ICIQ – Institut Català d'Investigació Química

Apr, 2021 - Sekarang

•

3 tahun, 5 bulan

- Experience in organic synthesis: routine synthesis, identification and purification of compounds using various spectroscopic and purification techniques. - Experience working on small molecule activation, utilising classical organic and electro synthetic techniques. - 8 Years’ experience demonstrating chemistry for undergraduate students in the university. - Use of a wide variety of synthetic organic chemistry techniques along with the associated spectroscopic analysis.

Apr, 2021 - Sekarang

•

3 tahun, 5 bulan

Damietta University

2011 - 2015

•

4 tahun

Master of Chemistry

Egypt

2011 - 2015

•

4 tahun

Damietta University

2006 - 2010

•

4 tahun

Bachelor of Chemistry

Egypt

2006 - 2010

•

4 tahun

Selective Electrosynthetic Hydrocarboxylation of α,β-Unsaturated Esters with Carbon Dioxide

et. al. Sheta, A.M.; (Angew. Chem.) 2021, 133, 22003–22008

Electrosynthetic hydrocarboxylation of α,β-unsaturated olefins with excellent regioselectivity is reported. The method requires no sacrificial electrode and is thus amenable to a flow configuration. The products are purified by simple crystallization. The synthesis of a precursor to ethosuximide, which contains an all-carbon quaternary centre, illustrates the potential of the process. Finally, a robustness study has benchmarked the process for future users.

Selective α,δhydrocarboxylation of conjugated dienes utilizing CO2 and electrosynthesis

et. al. Sheta, A.M.; (Chem. Sci) 2020,11, 9109- 9114

We report a new electrosynthetic approach, that does not rely on a sacrificial electrode, the reported method allows unprecedented direct access to carboxylic acids derived from dienes at the δ-position. In addition, the α,δ-dicarboxylic acid or the α,δ-reduced alkene can be easily accessed by simple modification of the reaction conditions.

preparation of 2-amino-6-chloropyridine-3,5-dicarbonitrile

et. al. Sheta, A.M.; (Chem. Het. Comp.) 2017, 53, 5, 540-544.

A green one-pot method for efficient synthesis of 2-amino-6-chloropyridine-3,5-dicarbonitrile derivatives was developed, based on stirring of various aldehydes and malononitrile with tetrachlorosilane and zinc chloride under solvent-free conditions at room temperature for 3–10 h. The effects of zinc chloride and the reaction conditions were studied. Compounds were characterized by X-ray analysis and NMR spectroscopy.

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100%

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