2019
DOI: 10.1016/j.molstruc.2018.10.064
|View full text |Cite
|
Sign up to set email alerts
|

Stereochemical assignment of four diastereoisomers of a maculalactone derivative by computational NMR calculations

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
1
1

Citation Types

0
2
0
1

Year Published

2020
2020
2021
2021

Publication Types

Select...
3
1

Relationship

1
3

Authors

Journals

citations
Cited by 4 publications
(3 citation statements)
references
References 75 publications
0
2
0
1
Order By: Relevance
“…Imaginary vibrational frequency of each conformer was checked, and no such frequency indicates true energy minima. Isotropic magnetic shielding was calculated with the GIAO (gauge-independent atomic orbital) method at the B3LYP/6-31G (d, P) level by using Gaussian 09W [10] , [11] .…”
Section: Methodsmentioning
confidence: 99%
“…Imaginary vibrational frequency of each conformer was checked, and no such frequency indicates true energy minima. Isotropic magnetic shielding was calculated with the GIAO (gauge-independent atomic orbital) method at the B3LYP/6-31G (d, P) level by using Gaussian 09W [10] , [11] .…”
Section: Methodsmentioning
confidence: 99%
“…Previdi et al succeeded in synthesizing a maculalactone derivative consisting of three stereogenic centers and the possible four diastereoisomers were furnished with 89 % yield and moderate diastereoselectivity by the cobalt-catalyzed multi-component coupling of bromobenzene, benzaldehyde and 2-benzyl-3-methylenesuccinate (Scheme 47). [48] Each of the diastereoisomers were isolated as a racemic mixture. But their characterization was not clear-cut and hence 1 H and 13 C NMR chemical shifts were calculated and assigned the stereochemistry by using computational techniques.…”
Section: Involving Cà C and Cà O Bond Formationsmentioning
confidence: 99%
“…Esse cancelamento dos erros sistemáticos ocorre devido ao fato de que as diferenças entre os deslocamentos químicos de núcleos equivalentes são melhores reproduzidas pelos cálculos computacionais do que os valores absolutos dos deslocamentos químicos. O parâmetro de comparação CP3 tem sido aplicado na determinação da configuração relativa de diversos compostos naturais e sintéticos [84][85][86][87][88][89][90][91][92][93][94][95][96][97][98][99][100][101].…”
unclassified