Iron(iii)-induced tandem Nazarov cyclization–rearrangement of α-(trimethylsilylmethyl)divinyl ketone. Synthesis of the bicyclo[4.3.0]nonane ring system via spiro[4.4]nonane

• DOI: 10.1039/a700816c
• Publication Date: 2002-07-26T09:22:59Z
• Authors: Chiaki Kuroda; Hiroshi Sumiya; Atsushi Murase; Akira Koito
• Keywords: Nonane; Tandem

6-Methylbicyclo[4.3.0]non-8-en-7-one was synthesized by FeCl 3 -induced tandem Nazarov cyclization–rearrangement of 4-cyclopentylidene-5-trimethylsilylpent-1-en-3-one, via 7-methyl-1-methylenespiro[4.4]nonan-2-one as intermediate.