ol9b01929_si_001.pdf (11.09 MB)
Au(I)-Catalyzed Synthesis of Trisubstituted Indolizines from 2‑Propargyloxypyridines and Methyl Ketones
journal contribution
posted on 2019-07-01, 18:41 authored by Matthew
D. Rossler, Colin T. Hartgerink, Emily E. Zerull, Benjamin L. Boss, Abigail K. Frndak, Miles M. Mason, Leslie A. Nickerson, Evan O. Romero, Jaimie E. Van de Burg, Richard J. Staples, Carolyn E. AndersonA new Au(I)-catalyzed method for
the preparation of trisubstituted
indolizines from easily accessible 2‑propargyloxy-pyridines
is reported. The reaction tolerates a wide range of functionality,
allowing for diversity to be introduced in four distinct regions of
the product (R, R1, R2, and Ar). The proposed
mechanism proceeds via enol addition to an allenamide intermediate
and explains the observed increase in yields when electron poor methyl
ketones are utilized.