Synthesis and Bergman cyclization of a beta-extended porphyrenediyne.
Condensation of a porphyrin-2,3-dione with a 1,2-diaminoarenediyne affords a [small beta]-extended porphyrinic-enediyne: upon thermal Bergman cyclization the quinoxaline spacer positioned between the macrocycle and the enediyne prevents tandem radical cyclization to a picenoporphyrin.
Spence
John D
JD
Trinity University, Department of Chemistry, One Trinity Place, San Antonio, TX, 78212, USA. john.spence@trinity.edu
Cline
Eric D
ED
LLagostera
Domingo M
DM
O'Toole
Patrick S
PS