References
- Nicolaou , K. C. and Smith , A. L. 1992 . Acc. Chem. Res. , 25 : 497 For a review see
- Nicolaou , K. C. 1994 . Chemistry in Britain . 30 : 33
- Ratovelomanana , V. and Limstrumelle , G. 1981 . Tetrahedron Lett. , : 315
- Basha , A. , Lipton , M. and Weinreb , S. M. 1977 . Tetrahedron Lett. , 48 : 4171
- Vorbrüggen , H. and Woodward , R. B. 1993 . Tetrahedron , 49 : 1625
- Mukaiyama , T. 1979 . For a review on the use of onium salts as carboxyl activating agents see . Angew. Chem. Int. Ed. Engl. , 18 : 707
- The 1H NMR spectra of the products 1a and 6a, resp. 1b and 6b are indistinguishable, the latter can be distinguished only by mass spectral analysis
- Coulson , D. R. 1972 . Inorg. Synth. , 13 : 121
- Katritzky , A. R. , Khan , G. R. and Leahy , D. E. 1984 . J. Org. Chem. , 49 : 4784
- For packing the column a solvent containing ca. 0.5 vol % of Et3N was used