Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
The Role of Conjugation in the Halogen‐Lithium Exchange Selectivity: lithiation of 4, 6, 7, 9‐tetrabromo‐1, 3‐dimethyl‐2, 3‐dihydro‐1H‐perimidine. / Якубенко, Артем Алексеевич; Тупикина, Елена Юрьевна; Антонов, Александр Сергеевич.
в: Chemistry - A European Journal, Том 29, № 46, e202301439, 15.08.2023.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - The Role of Conjugation in the Halogen‐Lithium Exchange Selectivity: lithiation of 4, 6, 7, 9‐tetrabromo‐1, 3‐dimethyl‐2, 3‐dihydro‐1H‐perimidine
AU - Якубенко, Артем Алексеевич
AU - Тупикина, Елена Юрьевна
AU - Антонов, Александр Сергеевич
PY - 2023/8/15
Y1 - 2023/8/15
N2 - The first case of successful suppression of the coordination of a lithium atom with a dialkylamino group by the effective conjugation of the latter with the aromatic core has been discovered. This effect controls regioselectivity of the bromine−lithium exchange in 4,6,7,9-tetrabromo-1,3-dimethyl-2,3-dihydro-1H-perimidine, which leads to products with the most effective conjugation. As a result, the product of this quadruple exchange demonstrates no tendency of the coordination of the NMe groups to neighboring lithium atoms despite the absence of steric restrictions. Experimental results are explained by means of quantum chemical calculations: geometry optimization, natural bond analysis and scans using the modredundant scheme.
AB - The first case of successful suppression of the coordination of a lithium atom with a dialkylamino group by the effective conjugation of the latter with the aromatic core has been discovered. This effect controls regioselectivity of the bromine−lithium exchange in 4,6,7,9-tetrabromo-1,3-dimethyl-2,3-dihydro-1H-perimidine, which leads to products with the most effective conjugation. As a result, the product of this quadruple exchange demonstrates no tendency of the coordination of the NMe groups to neighboring lithium atoms despite the absence of steric restrictions. Experimental results are explained by means of quantum chemical calculations: geometry optimization, natural bond analysis and scans using the modredundant scheme.
KW - conjugation
KW - coordination
KW - naphthalene
KW - organolithiums
KW - regioselectivity
UR - https://www.mendeley.com/catalogue/2519fd12-6da5-371d-ac1f-53c5b933d38b/
U2 - 10.1002/chem.202301439
DO - 10.1002/chem.202301439
M3 - Article
VL - 29
JO - Chemistry - A European Journal
JF - Chemistry - A European Journal
SN - 0947-6539
IS - 46
M1 - e202301439
ER -
ID: 113799928