Oxidative dimerisation of 1,3-bis(dimethylamino)isoquinolines to yield C-protonated 4,4′-bi-isoquinolyls
Abstract
1,3-Bis(dimethylamino)isoquinolines(1a–d) dimerise in the presence of silver perchlorate to yield the C-protonated diperchlorates (2a–d), which are irreversibly deprotonated to the corresponding hindered 4,4′-bi-isoquinolyls (3a–d); the dimerisation also occurs by cyclic voltammetry.