Recently, LiClO 4 has emerged as a powerful promoter in many chemical processes and in different organic media. 5 In this context, it is worthy to note that, due to the remarkable tolerance of LiClO 4 toward coordinating functional groups, even strongly coordinating amines can be used in the presence of LiClO 4 . 6 We have taken advantage of this compatibility in developing a practical, simple and environmentally benign methodology for the conjugate addition of ...