ملخص
Cyclic enol ethers can undergo a Ag+induced cycloaddition with a-chloro nitrones. The corresponding polycy-clic adducts were converted to enamoid structures of type 17b via the immonium tetraphenylborate salts. The existence of an intramolecular ketal and the N-alkyl-5,6-dihydro-2H-l,2-oxazine ring as moieties in 17b and 21a-c allowed a thermolysis to the 10-12-membered lactones through cleavage of a central C-C bond in the polycyclic system. Structural effects on the thermolysis have been noted.
اللغة الأصلية | الإنجليزيّة |
---|---|
الصفحات (من إلى) | 4213-4217 |
عدد الصفحات | 5 |
دورية | Journal of Organic Chemistry |
مستوى الصوت | 42 |
رقم الإصدار | 26 |
المعرِّفات الرقمية للأشياء | |
حالة النشر | نُشِر - 1977 |
منشور خارجيًا | نعم |