American Chemical Society, Journal of Organic Chemistry, 18(78), p. 9505-9511, 2013
DOI: 10.1021/jo401551c
Full text: Unavailable
Triphenylene twins are intriguing structures, and those bridged through their 3,6-positions by dipyrromethene units give a new class of macrocycles that can be viewed as rigid, expanded porphyrin derivatives in which coplanarity is enforced in a formally antiaromatic pi system. Somewhat surprisingly, however, macrocyclization leads to significant overall stabilization of the dipyrromethene chromophores.