Author/Authors :
Ohkubo، نويسنده , , Mutsumi and Uchikawa، نويسنده , , Wataru and Matsushita، نويسنده , , Hitomi and Nakano، نويسنده , , Aiko and Shirato، نويسنده , , Takayuki and Okamoto، نويسنده , , Sentaro، نويسنده ,
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.
