Acknowledgment. We thank the National Institutes of Health (Grant GM 37014 and AI 23688) for generous financial support. We also thank Dr. Jim Rice for help in obtaining mass spectral data. ... (9) For a review of the Nazarov cyclization reaction, see: Santelli- Rouvier, C.; Santelli, M. Synthesis 1983, 429. For additional examples of Nazarov cyclization see: (a) Brande, E. A.; Coles, JA J. Chem. SOC. 1952,1430. (b) Hirano, S.; Takagi, S.; Hiyama, T.; ...
