Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5289636 | Tetrahedron Letters | 2006 | 5 Pages |
Abstract
The Ti(II)-mediated cyclization of 3-methyloct-2-en-7-yn-1-ol derivatives 2 proceeded stereoselectively to afford 1-methyl-2-(1-alkylbut-3-enylidene)-1-vinylcyclopentanes 3 after treatment of the resulting alkenyltitaniums with allylbromide in the presence of CuCN, which was readily converted to 3a-methyl-2,3,3a,6-tetrahydro-1H-indenes 1 by the Ru-catalyzed ring-closing metathesis.
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Authors
Mutsumi Ohkubo, Wataru Uchikawa, Hitomi Matsushita, Aiko Nakano, Takayuki Shirato, Sentaro Okamoto,