Page 1. SYNTHETIC COMMUNICATIONS, 18(2), 125-130 (1988) T. Howard Black* and John D. Fields Department of Chemistry, Eastern Illinois University Charleston, Illinois 61920 ... (h) Beckwith, AL; Pigou, PE -. Soc.. 1986, 85. (i) E'ukuzawa, S.; Wanishi, A.; Fujinami, T.; Sakai, S. J. Che& w., 1986, 475, 624. (1) Clerici, A,; Porta, 0.; Zago, P. Tetrahedron 1986, 42, 561. 5. Zenk, PC; Wiley, RA &Q?&&s 1984, 695. 6. Black, TH; my , WJ -, in press. . . ...