Merrifield Resin−C₆H₄CH₂N₃P(MeNCH₂CH₂)₃N:  An Efficient Reusable Catalyst for Room-Temperature 1,4-Addition Reactions and a More Convenient Synthesis of Its Precursor P(MeNCH₂CH₂)₃N

1,4-additions to a variety of Michael acceptors with a wide variety of donors were efficiently catalyzed at room temperature by the title reusable Merrifield resin-supported catalyst. Advantages of this catalyst include a simple workup (filtration of the reaction mixture) and good to excellent product yields. We also report a substantially simplified synthesis of the commercially available strong nonionic base 1, a precursor to the title polymer-bound catalyst.