Bischler-napieralski reaction—II : Synth
✍
Nobuo Itoh; Shigehiko Sugasawa
📂
Article
📅
1959
🏛
Elsevier Science
🌐
French
⚖ 52 KB
Ethylene ketals of the type (I) cyclise in presence of phosphorus pentoxide in pyrid& to give the ketal (II) which on hydrolysis yields l-phenyl-6:7-dimethoxy4oxo-3:4-dihydroisquinob (III). 1-(4-oxo-cyclohexyl)-6:7-dimethoxy-3:4-dihydroisoquinoline (Vlll) and 2-oxo-3-methyl-g:1& dimethoxy-I 2:3:4:6: