title: Improved synthesis of dithieno[3,2-b:2',3'-d]thiophene (DTT) and derivatives for cross coupling.
abstract: An improved synthesis of dithieno[3,2-b:2',3'-d]thiophene (DTT) and its 2,6- and 3,5-dibromo derivatives has been devised; Stille cross coupling of 2,5-(bistrimethylstannyl)-DTT afforded the oligomer 12.
authors.affiliation: Melville Laboratory for Polymer Synthesis, Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, UK CB2 1EW. jf245@cam.ac.uk
authors.forename: Joseph
authors.initials: J
authors.lastname: Frey
authors.forename: Andrew D
authors.initials: AD
authors.lastname: Bond
authors.forename: Andrew B
authors.initials: AB
authors.lastname: Holmes