N-ethyl-N,N-diisopropylamine; sodium iodide in acetonitrile overnight;

1: dicyclohexylcarbodiimide / tetrahydrofuran / 1) 0 deg C to r.t., overnight, 2) r.t., 2 h, 3) -30 deg C 2: 68 percent / NaI, Et(iPr)2N / acetonitrile / overnight View Scheme

2-picoline in dichloromethane