1. C. M. Starks, J. Am. Chem. Soc.
93, 195–199 (1971).
2. M. Makosza and B. Serafin, Rocz. Chem.
39, 1223–1230 (1965).
3. A. Brandström and K. Gustavii, Acta Chem. Scand.
23, 1215–1218 (1969).
4. W. P. Weber and G. W. Gokel, Phase Transfer Catalysis in Organic Chemistry (Springer-Verlag, Berlin, Heidelberg, New York, 1977).
5. C. M. Starks and C. Liotta, Phase Transfer Catalysis: Principles and Techniques (Academic Press, New York, 1978).