[3+4] annulation using a [beta-(trimethylsilyl)acryloyl]silane and the lithium enolate of an alpha,beta-unsaturated methyl ketone: (1R*,6S*,7S*)-4-(tert-butyldimethylsiloxy)-6-(trimethylsilyl)bicyclo[5.4.0]undec-4-en-2-one
K. Takeda et al., [3+4] annulation using a [beta-(trimethylsilyl)acryloyl]silane and the lithium enolate of an alpha,beta-unsaturated methyl ketone: (1R*,6S*,7S*)-4-(tert-butyldimethylsiloxy)-6-(trimethylsilyl)bicyclo[5.4.0]undec-4-en-2-one, ORG SYNTH, 76, 1999, pp. 199-213