Chemistry Letters, Vol.31, No.8, 810-811, 2002
A high-yielding and convenient synthesis of rotaxane based on an ester forming capping methodology
An efficient method for preparation of rotaxanes, involving hydrogen bonding guided self-assembly and diaryldiazoalkanes ester forming end-capping of pseudorotaxanes, is described. The end-capping reactions proceed under mild conditions and furnish the expected rotaxanes in excellent yields.