(3) Replacement of Diazonium Salts. Reaction of 2-(2-lithio-4-methoxyphenyl)-4, 4-dimethyl- 2-0xazoline~~ with 1-naphthaldehyde followed by hydrolysis yielded 5-methoxy-3-(l- naphthyl) phthalide (18, 53% pure) which was reduced in 79% yield to pure 4-methoxy-2-[(1- naphthy1) methyllbenzoic acid (19). By reaction with methyllithium in ether, 19 was converted in 79% yield to pure 4-methoxy-2-[(1-naphthy1) methyllacetophenone (20), and ...