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:
✦ LIBER ✦
Extension of the Bischler-Napieralski reaction—II: Synthesis of pyrroline derivatives
✍ Scribed by S. Sugasawa; S. Ushioda
- Book ID
- 103398848
- Publisher
- Elsevier Science
- Year
- 1959
- Tongue
- French
- Weight
- 322 KB
- Volume
- 5
- Category
- Article
- ISSN
- 0040-4020
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