Functionalized ruthenatricarbadecaboranes via selective cage iodination and Sonogashira coupling reactions

摘要: Selective iodination of the cyclopentadienylruthenium tricarbadecaboranyl complexes 1-( η 5 -C H )–2-Ph– closo -1,2,3,4-RuC 3 B 7 9 ( 1 ) and (CH 8 2 to form their mono-iodo derivatives, )–2-Ph–6-I– 4 ), was achieved in 90% yields by reactions with ICl CH Cl solutions. Also isolated trace amounts from reaction di-iodo )–2-Ph–6,11-I – , complex. The sonication-promoted Sonogashira coupling terminal acetylenes catalyzed Pd(dppf)Cl /CuI yielded functionalized ruthenatricarbadecaboranyl )–2-Ph–6-(Ph-C≡C)– 6 )–2-Ph–6-[CH C(O)OCH -C≡C]– )–2-Ph–6-[( )Fe( )-C≡C]– )–2-Ph–6-[(CH Si-C≡C]– ). These thus provide a versatile, systematic pathway for syntheses wide variety new types complexes.