An Improved Protocol for the Synthesis of [(eta(4)-C4R4)Co(eta(5)-C5H5)] Complexes

作者：Bertrand Guillaume; Tortech Ludovic; Fichou Denis; Malacria Max; Aubert Corinne^*; Gandon Vincent

来源：Organometallics, 2012, 31(1): 126-132.

DOI：10.1021/om2006629

The reaction of bulky alkynes C2R2 with (eta(5)-C5H5)Co(CO)(dimethyl fumarate) under microwave irradiation provides complexes of the type [(eta(4)-C4R4)Co(eta(5)-C5H5)] in good to excellent yields. This protocol represents a significant improvement over those reported previously. In particular, the formation of insertion products such as cyclopentadienones or cyclohexadienes can be avoided. In addition, because of the exceptional stability of (eta(5)-C5H5)Co(CO)(dimethyl fumarate), the reactions can be carried out in crude solvents. The easy access to [(eta(4)-C4R4)Co(eta(5)-C5H5)] complexes stimulated a study of their reactivity, notably under cross-coupling conditions.

• 出版日期2012-1-9
• 单位中国地震局