Phenol or
p-cresol is bound to os
miu
m(II) andco
mbined with an aldehyde to generate re
markablystable
mages/gifchars/eta.gif" BORDER=0 >
2-coordinated
o-quinone
methide co
mplexes. Whenthese
materials are treated with an oxidant (CAN,Cu(II)), the
o-quinone
methide is liberated and can betrapped with suitable alkenes to generate chro
mans.