SYNTHESIS OF HIGHLY CONGESTED BITHIOPHENE AND TERTHIOPHENE - 3,4,3',4'-TETRA-TERT-BUTYLBITHIOPHENE AND 3',4'-DI-TERT-BUTYL-2,2' 5',2''-TERTHIOPHENE/

Authors
NAKAYAMA J TING Y SUGIHARA Y ISHII A
Citation
J. Nakayama et al., SYNTHESIS OF HIGHLY CONGESTED BITHIOPHENE AND TERTHIOPHENE - 3,4,3',4'-TETRA-TERT-BUTYLBITHIOPHENE AND 3',4'-DI-TERT-BUTYL-2,2' 5',2''-TERTHIOPHENE/, Heterocycles, 44, 1997, pp. 75-80
Citations number
9
Categorie Soggetti
Chemistry Inorganic & Nuclear
Journal title
Heterocycles → ACNP
ISSN journal
03855414
Volume
44
Year of publication
1997
Pages
75 - 80
Database
ISI
SICI code
0385-5414(1997)44:<75:SOHCBA>2.0.ZU;2-7
Abstract
The Pd(PPh(3))(4)-catalyzed coupling of 3,4-di-tert-butyl-2-thienylmag nesium bromide with 2-bromo-3,4-di-tert-butylthiophene gave 3,4,3',4'- tetra-tert-butyl-2, 2'-bithiophene (5) in moderate yield. X-Ray single crystal structure analysis of 5 revealed that its thiophene rings rem ain planer, but their plane is perpendicular to each other. The synthe sis of 3',4'-di-tert-butyl-2,2':5',2 ''-terthiophene in a similar way is also described.