Bisphosphine-Catalyzed Mixed Double-Michael Reactions: Asymmetric Synthesis of Oxazolidines, Thiazolidines, and Pyrrolidines
作者:Vardhineedi Sriramurthy、Gregg A. Barcan、Ohyun Kwon
DOI:10.1021/ja073754n
日期:2007.10.1
mixed double-Michael reactions have been developed to afford β-amino carbonyl derivatives of oxazolidines, thiozolidines, and pyrrolidines in excellent yields and with high diastereoselectivities. Efficient reactions between amino-acid-derived pronucleophiles, such as β-amino alcohols, β-amino thiols, and γ-amino diesters, as Michael donors and electron-deficient acetylenes, such as propiolates, acetylacetylene