Chemistry Letters, Vol.35, No.7, 766-767, 2006
Efficient synthesis of rotaxane based on complexation of acetylene and dicobalt hexacarbonyl: Introduction of a transformable functional group
An efficient end-capping method for preparation of rotaxanes by complexation of dicobalt hexacarbonyl and acetylene moiety of the axle end is described here. The end-capping reaction of pseudorotaxanes proceeds under mild conditions and furnishes the expected rotaxanes bearing a transformable functional group in high yield.