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Ring-chain tautomerism in 1,3-oxazines

✍ Scribed by Fulop, Ferenc; Pihlaja, Kalevi; Mattinen, Jorma; Bernath, Gabor

Book ID
118045222
Publisher
American Chemical Society
Year
1987
Tongue
English
Weight
611 KB
Volume
52
Category
Article
ISSN
0022-3263

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📜 SIMILAR VOLUMES

Substituent effects on the ring-chain ta
Substituent effects on the ring-chain tautomerism of 1,3-oxazines
✍ Ferenc Fülöp; László Lázár; Gábor Bernáth; Reijo Sillanpää; Kalevi Pihlaja 📂 Article 📅 1993 🏛 Elsevier Science 🌐 French ⚖ 518 KB

## Abstmct: The a@ sub&umts at positions 4 and 6 do not erert observable &unmic cffcts on the ting-chain tautomeric mtios of 2,4-or 2,6-aTaqbubstituted-tetmhydm-1,~~. On the other hand, the ekaivnic @ect of the Z-a~yl subs&em is mat&& in all eight seties s&die4 the equilibria CM be desctibed @ the

Gas-Phase ring-chain tautomerism in 1,3-
Gas-Phase ring-chain tautomerism in 1,3-oxazines. Does it exist?
✍ Pirjo Vainiotalo; Ferenc Fülöp; Kalevi Pihlaja 📂 Article 📅 1991 🏛 John Wiley and Sons 🌐 English ⚖ 389 KB

Gas-phase ring-chain tautomeric equilibria with eight 2-phenyl-substituted perhydro-l,3-oxazines and six 2-arylsubstituted 1,2-dihydro-4H-3,l-benzoxazines were studied by recording their mass spectra under different conditions. Their fragmentation behaviour was also studied using metastable ion anal

Ring-chain tautomerism and three- to fou
Ring-chain tautomerism and three- to four-component equilibria in fused-ring tetrahydro-1,3-oxazines
✍ Kalevi Pihiaja; Aija Parkkinen; Ferenc Fülöp; Jonna Mattinen; Gábor Bernath 📂 Article 📅 1991 🏛 Elsevier Science 🌐 French ⚖ 489 KB

The condensation of &-(1) and trans-2-hydroxymethyl-4-cyclohexenvl-l-amine (21 and 2,3-w- (3) cyclo?2.2.l]heptyl&nine (4j and 2,3-d.&&-3\_hydroxymethylbiwith 8 -different-aromatic aldehydes led to ring-chain tautomeric equilibria between epimeric tetrahydro-1,3-oxazines and open-chain Schiff bases.