1. (a) Borodin, B. Liebigs Ann. 1861, 119, 121.
2. (b) Hunsdiecker, H. C. Chem. Ber. 1942, 75, 291.
3. (c) Chrich, D. In Comprehensive Organic Synthesis; Trost, B. M., Steven, V. L. Eds.; Pergamon: Oxford, 1991; Vol. 7, pp. 723–734.
4. (d) Sheldon, R. A.; Kochi, J. K. Org. React. (NY) 1972, 19, 326.
5. (e) Mckillop, A.; Bromley; Taylor, E. C. J. Org. Chem. 1969, 34, 1172.