IIa auxiliary solvents and thus failed to reduce. It was found that morpholine was a much inore effective solvent in this reaction, although reduction was still not complete when there were two rings to reduce. It Fas also noted that a niethyl ortho to the inethoxyl in the benzene ring prevented reduction of that ring. To prepareVIb and c, the dihydropyraii adduct of p- broinophenol was used instead of p-bromoanisole in inaking the lithiuni reagent to react ...
