References
- W. P. Weber and G. W. Gokel, “Phase Transfer Catalysis in Organic Synthesis,” Springer Verlag, Berlin, 1977; C. M. Starks and C. Liotta, “Phase Transfer Catalysis,” Academic Press Inc., New York, N. Y., 1978.
- Y. Nakajima, R. Kinishi, J. Oda, and Y. Inouye, Bull. Chem. Soc. Japan, 50, 2025 (1977); Y. Nakajima, J. Oda, and Y. Inouye, Tetrahedron Lett., 3107 (1978).
- H. Normant, T. Cuvingny, and P. Savignac, Synthesis, 805 (1975).
- These results may possibly be related to an equilibrium between 9 and 10 involving acyl migration. However, this possibility can be excluded by the experimental fact that the rearrangement product 10 was not detected at all, when 9 was subjected to the same treatment as was employed for the reaction.
- N. Watanabe, M. Okano, and S. Uemura, Bull. Chem. Soc. Japan, 47, 2745 (1974).
- J. M. Stewart, J. Org. Chem., 28, 596 (1963).
- W. L. F. Armarego, “Stereochemistry of Heterocyclic Compounds,” Wiley Interscience, New York, 1977, Part 2, p. 172 ff.