4-amino-3',5'-di-tert-butylbiphenyl

(3',5'-Di-tert-butyl-4-iodo-biphenyl-3-ylethynyl)-triisopropyl-silane

3',5'-Di-tert-butyl-3-[(triisopropylsilanyl)-ethynyl]-4-(4-trimethylsilanyl-buta-1,3-diynyl)-biphenyl