title: Regioselectivity in the formation of small- and medium-sized cyclic ethers by diene-ene ring-closing metathesis.
abstract: In the formation of medium-sized ethers by diene-ene ring-closing metathesis, the formation of cyclic allyl ethers with a smaller ring size and of pentadienyl ethers with a larger ring size compete with each other. In the competition between six- and eight-membered and seven- and nine-membered ring formation, the smaller rings are formed exclusively, whereas in the competition between the five- and seven-membered rings, both products are formed in comparable amounts.
authors: Max-Planck-Institut für molekulare Physiologie, Otto-Hahn Strasse 11, 44227 Dortmund, Germany.
authors: Sudipta
authors: S
authors: Basu
authors: Herbert
authors: H
authors: Waldmann