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2004
Terpenes
U 0200
51- 159
Electron-Transfer-Initiated Cascade Cyclizations of Terpenoid Polyalkenes in a
Low-Polarity Solvent: One-Step Synthesis of Mono- and Polycyclic Terpenoids
with Various Functionalities. — The combination of cationic acceptor NMQ with biphenyl as co-acceptor in a mixture of CH2Cl 2/MeOH (4:1) is found to be efficient to
perform cascade cyclizations of polyalkenes. Mono- and polycyclic terpenoids are
formed in one step. For the first time the cyclization of farnesol (VI) and geranylgeraniol (XI) under photoinduced electron transfer conditions is achieved. — (OZSER, M.
E.; ICIL, H.; MAKHYNYA, Y.; DEMUTH*, M.; Eur. J. Org. Chem. 2004, 17,
3686-3692; MPI Bioinorg. Chem., D-45413 Muelheim/R., Germany; Eng.) — Klein
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