Structural studies on 6-methyl-9-carbamo
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Gábor Tóth; Carlos de La Cruz; István Bitter; István Hermecz; Béla Pete; Zoltán
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Article
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1982
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John Wiley and Sons
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English
⚖ 555 KB
Several 6-methyl-9-carbamoyltetrahydro-4H-pyrido[l,2-a]pyrimid~-4-ones have been prepared using phosgene iminium chloride. These compounds can exist in equilibrium as the cis (3A) imine$(3B) enaminee trans (3C) imine. 'H, 13C and "N NMR prove that the cis-and trans-imine isomers are predominant in t