Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Lithiation of 2,4,5,7-Tetrabromo-1,8-bis(dimethylamino)naphthalene: Peculiarities of Directing Groups’ Effects and the Possibility of Polymetalation. / Якубенко, Артем Алексеевич; Карпов, Валерий Владимирович; Тупикина, Елена Юрьевна; Антонов, Александр Сергеевич.
в: Organometallics, Том 40, № 21, 08.11.2021, стр. 3627-3636.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Lithiation of 2,4,5,7-Tetrabromo-1,8-bis(dimethylamino)naphthalene: Peculiarities of Directing Groups’ Effects and the Possibility of Polymetalation
AU - Якубенко, Артем Алексеевич
AU - Карпов, Валерий Владимирович
AU - Тупикина, Елена Юрьевна
AU - Антонов, Александр Сергеевич
N1 - Publisher Copyright: ©
PY - 2021/11/8
Y1 - 2021/11/8
N2 - The bromine-lithium exchange sequence upon interaction of 2,4,5,7-tetrabromo-1,8-bis(dimethylamino)naphthalene with n-BuLi was studied. Experimental results were explained by means of quantum chemical calculations. It was demonstrated that the first exchange occurs in position 4 due to the significant decrease of a steric strain of the molecule. The second exchange takes place in either position 5 or 7 due to the even more negative charge distribution in the naphthalene core. As a result, the third exchange leads to the species containing lithium in positions 2,4,5 or 2,4,7. Using a large excess of n-BuLi in hexane, 2,4,5,7-tetralithio-1,8-bis(dimethylamino)naphthalene was successfully prepared. The latter was used for the synthesis of several tetrasubstituted derivatives of 1,8-bis(dimethylamino)naphthalene by quenching with different electrophiles.
AB - The bromine-lithium exchange sequence upon interaction of 2,4,5,7-tetrabromo-1,8-bis(dimethylamino)naphthalene with n-BuLi was studied. Experimental results were explained by means of quantum chemical calculations. It was demonstrated that the first exchange occurs in position 4 due to the significant decrease of a steric strain of the molecule. The second exchange takes place in either position 5 or 7 due to the even more negative charge distribution in the naphthalene core. As a result, the third exchange leads to the species containing lithium in positions 2,4,5 or 2,4,7. Using a large excess of n-BuLi in hexane, 2,4,5,7-tetralithio-1,8-bis(dimethylamino)naphthalene was successfully prepared. The latter was used for the synthesis of several tetrasubstituted derivatives of 1,8-bis(dimethylamino)naphthalene by quenching with different electrophiles.
KW - BOND
KW - ENERGIES
KW - ORGANOLITHIUM COMPOUNDS
KW - PERI-NAPHTHYLENEDIAMINES
KW - SPONGE
KW - WAVE-FUNCTION
UR - http://www.scopus.com/inward/record.url?scp=85118647119&partnerID=8YFLogxK
UR - https://www.mendeley.com/catalogue/8a2b1e36-3858-3a6b-b16e-783502620bcb/
U2 - 10.1021/acs.organomet.1c00489
DO - 10.1021/acs.organomet.1c00489
M3 - Article
VL - 40
SP - 3627
EP - 3636
JO - Organometallics
JF - Organometallics
SN - 0276-7333
IS - 21
ER -
ID: 87508679