1112-00-1Relevant articles and documents
Alkynyl-siibstituted tricarbonyl(cyclobutadlene)iron complexes: coupling of complexes sfannylalkynes
Bunz, Uwe H. F.,Jutta
, p. 785 - 797 (2007/10/03)
The synthesis of mono-, di-, tri- and tetraalkynylated tricartaonyl(cyclobutadiene)iron complexes is accomplished by a repetitive metalation/iodination/coupling sequence. Application of this sequence leads to the synthesis of oligomeric cyclobutadiene complexes with various topologies, inter alia to the synthesis of a perethynylated aimer 24. Alternatively a one-step coupling procedure (Stille-Farina) has been used to synthesize tetraalkynylated tricarbonyl(cyclobutadiene)irons 26, VCH Verlagsgesellschaft mbH, : 1996.