Axially Chiral Biaryl Diols Catalyze Highly Enantioselective Hetero-Diels−Alder Reactions through Hydrogen Bonding

Aditya K. Unni, Norito Takenaka, Hisashi Yamamoto, Viresh H. Rawal

Journal of the American Chemical Society · 2005 · 235 citations · 20 references

Concepts

Abstract

Axially chiral 1,1'-biaryl-2,2'-dimethanol (3, BAMOL) family of diols are highly effective catalysts for enantioselective hetero-Diels-Alder reactions between aminosiloxydiene 1 and a wide variety of unactivated aldehydes. The reactions proceed in useful yields and excellent enantioselectivities. The diols function in the same capacity as Lewis acids, by activating the aldehyde carbonyl group through hydrogen bonding.

References

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