Lithium norcaranylidenoids. Alkylation and epimerization
作者:Philip M. Warner、Suae-Chen Chang、Nicholas J. Koszewski
DOI:10.1016/s0040-4039(00)98210-8
日期:1985.1
The epimeric 7-bromo-7-lithionorcaranes have been stereospecifically generated; the -bromo isomer is stable at −78°C, while the - bromo isomer is reactive. The stereochemistry of itsreaction with nBuLi involves inversion.
Solvolysis of 10,10-dibromotricyclo[4,3,1,01,6]decane. Evidence for an intermediate bicyclo[4,3,1]dec-1(10)-ene derivative
作者:C. B. Reese、M. R. D. Stebles
DOI:10.1039/c39720001231
日期:——
Both (3) and (9) readily undergo Ag+-promoted solvolysis in aqueous acetone solution to give monocyclic ketones [(6) and (11), respectively] as the major products; it seems likely that the latter compounds results from the fragmentation of highly-strained bicyclic intermediates [(7) and (10), respectively].