Stereochemistry of enine aldehydes: based on the results of x-ray structural analysis, nuclear magnetic resonance and quantum chemical calculations

Abdulloev, Tohir Kh.

Товарлар кимёси ва халқ табобати · 2024-yil

Annotatsiya

The study presents the research results aimed at developing conditions for synthesizing enyne dihydroxy aldehydes and identifying factors responsible for their conformational stability. The most effective oxidant for obtaining enyne dihydroxy aldehydes was found to be MnO₂. A comparison of the vibrational frequencies of acetylene, ethylene bonds, and the carbonyl group obtained for each of the isomers, considering quantum chemical calculations of the bond lengths and electron density distribution in the molecules, reveals that a decrease in bond order leads to greater conformational freedom of the molecules. Consequently, valence vibration frequencies are shifted to a higher region. For the studied conformations, the distribution of electron density (Mulliken charges) and the lengths of bonds involved in the conjugated system were calculated, uncovering changes in the multiplicity of carbon-carbon bonds. The results of the research using quantum chemical calculations allow for the assignment of IR and NMR spectra of the isomeric enynic dihydroxyaldehydes and the conclusion about the disruption of coplanarity in the conjugated system of the Z-isomer of the dihydroxyaldehyde. For instance, differences in the SSCC of the aldehyde proton with the nearby proton of the ethylene bond indicate a disruption of the coplanarity of the conjugated system in enynic dihydroxyaldehydes.

Maqola ma’lumotlari
MualliflarAbdulloev, Tohir Kh.
JurnalТоварлар кимёси ва халқ табобати
NashriyotТабобат академияси
ISSN2181-2977
Nashr sanasi2024-02-26
Jild2
Son6
Betlar200-221
TilIngliz
Ilmiy sohaKimyo
DOI10.55475/jcgtm/vol2.iss6.2023.246
Indeksga qo‘shilgan2026-08-26

DOI: 10.55475/jcgtm/vol2.iss6.2023.246 · Maqolaning asl sahifasi

Kalit so‘zlar

Ениновые диоксиальдегиды, сопряженная система, ИК- и ПМР спектры, магнитная анизотропия, стереохимия, Enyne dihydroxyaldehydes, conjugated system, IR and PMR spectra, magnetic anisotropy, stereochemistry, Yenin dioksi-aldegidlari, konjugatsiya tizimi, IQ va PMR spektrlar, magnit anizotropiya, stereokimyo

Ilmiy soha

Kimyo

Iqtibos keltirish

APAAbdulloev, Tohir Kh. (2024). STEREOCHEMISTRY OF ENINE ALDEHYDES: BASED ON THE RESULTS OF X-RAY STRUCTURAL ANALYSIS, NUCLEAR MAGNETIC RESONANCE AND QUANTUM CHEMICAL CALCULATIONS. Товарлар кимёси ва халқ табобати, 2(6), 200-221. https://doi.org/10.55475/jcgtm/vol2.iss6.2023.246
GOST (OAK)Abdulloev, Tohir Kh. STEREOCHEMISTRY OF ENINE ALDEHYDES: BASED ON THE RESULTS OF X-RAY STRUCTURAL ANALYSIS, NUCLEAR MAGNETIC RESONANCE AND QUANTUM CHEMICAL CALCULATIONS // Товарлар кимёси ва халқ табобати. – 2024. – T. 2, № 6. – P. 200-221. – DOI: 10.55475/jcgtm/vol2.iss6.2023.246.
MLAAbdulloev, Tohir Kh. “STEREOCHEMISTRY OF ENINE ALDEHYDES: BASED ON THE RESULTS OF X-RAY STRUCTURAL ANALYSIS, NUCLEAR MAGNETIC RESONANCE AND QUANTUM CHEMICAL CALCULATIONS.” Товарлар кимёси ва халқ табобати, 2(6), 200-221, 2024. https://doi.org/10.55475/jcgtm/vol2.iss6.2023.246
ChicagoAbdulloev, Tohir Kh. “STEREOCHEMISTRY OF ENINE ALDEHYDES: BASED ON THE RESULTS OF X-RAY STRUCTURAL ANALYSIS, NUCLEAR MAGNETIC RESONANCE AND QUANTUM CHEMICAL CALCULATIONS.” Товарлар кимёси ва халқ табобати, 2(6), 200-221 (2024). https://doi.org/10.55475/jcgtm/vol2.iss6.2023.246
HarvardAbdulloev, Tohir Kh (2024) ‘STEREOCHEMISTRY OF ENINE ALDEHYDES: BASED ON THE RESULTS OF X-RAY STRUCTURAL ANALYSIS, NUCLEAR MAGNETIC RESONANCE AND QUANTUM CHEMICAL CALCULATIONS’, Товарлар кимёси ва халқ табобати, 2(6), 200-221. https://doi.org/10.55475/jcgtm/vol2.iss6.2023.246
BibTeX
@article{abdulloevtohirkh2024,
  title = {STEREOCHEMISTRY OF ENINE ALDEHYDES: BASED ON THE RESULTS OF X-RAY STRUCTURAL ANALYSIS, NUCLEAR MAGNETIC RESONANCE AND QUANTUM CHEMICAL CALCULATIONS},
  author = {Abdulloev, Tohir Kh.},
  journal = {Товарлар кимёси ва халқ табобати},
  year = {2024},
  volume = {2},
  number = {6},
  pages = {200-221},
  doi = {10.55475/jcgtm/vol2.iss6.2023.246},
  url = {https://doi.org/10.55475/jcgtm/vol2.iss6.2023.246}
}

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