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2005
Ring closure reactions
O 0130
Mercuric Triflate Catalyzed Tandem Cyclization Leading to Polycarbocycles. —
first mercuric salt catalyzed biomimetic tandem cyclization of a nonenylbenzene
24- 046 The
derivative and dodecadienyl substrates to give polycarbocycles with an efficient catalytic turnover is described. The reaction tolerates a number of functional groups and
allows the preparation of bi- and tricyclic systems (II) and (IV) in good to excellent
yields. The reaction of (V) affords a mixture of trans- and cis-products along with the
monocyclic (VIII). — (IMAGAWA, H.; IYENAGA, T.; NISHIZAWA*, M.; Org.
Lett. 7 (2005) 3, 451-453; Fac. Pharm. Sci., Tokushima Bunri Univ., Yamashiro,
Tokushima 770, Japan; Eng.) — Steudel
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