Browsing by Autor "Manuel Nogueras"

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    The reaction of aromatic α,β‐unsaturated ketones with 4,5‐diamino‐1,6‐dihydropyrimidin‐6‐ones
    (Wiley, 1994) Braulio Insuasty; MÓNica Ramos; Jairo Quiroga; Adolfo Sánchez; Manuel Nogueras; Norbert Hanold; Herbert Meier
    Abstract The reaction of 4,5‐diamino‐1,6‐dihydropyrimidin‐6‐ones 1 with one equivalent of the chalcones 2 leads in an acidic medium to the formation of the 2,4‐diaryl‐2,3,6,7‐tetrahydro‐1 H ‐pyrimido[4,5‐ b ][1,4]diazepin‐6‐ones 3a‐m . The structure elucidation of the products is based on detailed nmr investigations including selective 13 C[ 1 H] decoupling experiments.