DOI

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.
Язык оригиналаанглийский
Страницы (с-по)3627-3636
Число страниц10
ЖурналOrganometallics
Том40
Номер выпуска21
Дата раннего онлайн-доступа25 окт 2021
DOI
СостояниеОпубликовано - 8 ноя 2021

    Предметные области Scopus

  • Неорганическая химия
  • Физическая и теоретическая химия
  • Органическая химия

ID: 87508679