2,8- and 2,9-Diboryltetracenes as useful building blocks for extended pi-conjugated tetracenes.
Ir-catalyzed direct diborylation of tetracene gave a 1:1 mixture of 2,8- and 2,9-bis[(pinacolato)boryl]tetracenes, which were separated by recrystallization. These diboryltetracenes are useful building blocks for the regiospecific synthesis of extended pi-conjugated tetracenes directed to semiconductors for organic field-effect transistors (OFETs). Syntheses of thiophene-tetracene-thiophene, thiophene-tetracene-bithiophene-tetracene-thiophene, and thiophene-tetracene-anthracene-tetracene-thiophene pi-systems have been achieved on the basis of the 2,8- and 2,9-diboryltetracenes.
Kimoto
Takakazu
T
Department of Chemistry, Faculty of Science, Shizuoka University, 836 Ohya, Suruga-ku, Shizuoka 422-8529, Japan.
Tanaka
Kenro
K
Sakai
Yoshimasa
Y
Ohno
Akira
A
Yoza
Kenji
K
Kobayashi
Kenji
K