C. Kuroda et H. Koshio, New cyclization reaction of 2-(trimethylsilylmethyl)pentadienal. Synthesisof spiro[4.5]decane ring system, CHEM LETT, (8), 2000, pp. 962-963
4-Cyclohexylidene-2-(trimethylsilylmethyl)but-2-enal, allylsilane type of l
inearly conjugated pentadienal, underwent a new self-cyclization reaction t
o afford 2-methylspiro [4.5]-2-decen-1-one. The reaction of 4-(4-arkylcyclo
hexylidene)-2-(trimethylsilylmethyl)-2-butenal proceeded stereoselectively.