Chemistry Letters, Vol.29, No.8, 962-963, 2000
New cyclization reaction of 2-(trimethylsilylmethyl)pentadienal. Synthesis of spiro[4.5]decane ring system
4-Cyclohexylidene-2-(trimethylsilylmethyl)but-2-enal, allylsilane type of linearly conjugated pentadienal, underwent a new self-cyclization reaction to afford 2-methylspiro [4.5]-2-decen-1-one. The reaction of 4-(4-arkylcyclohexylidene)-2-(trimethylsilylmethyl)-2-butenal proceeded stereoselectively.