Consecutive Three- and Four-Component Coupling Reactions with Anions Generated from a Butane Diacetal Desymmetrized Glycolic Acid Derivative We gratefully acknowledge financial support from the EPSRC (to D.J.D.), the EU (Marie Curie Fellowship to F.R.), and the Novartis Research Fellowship (to S.V.L.). We are also indebted to Dr. John E. Davis for the X-ray crystal structure determinations
Angew Chem Int Ed Engl. 2001 Dec 17;40(24):4763-4765.
doi: 10.1002/1521-3773(20011217)40:24<4763::aid-anie4763>3.0.co;2-d.