... Alkylpyrimidinium Salts Using Liquid Ammonia/Potassium Permanganate [1] Dick J. Buurman and Henk C. van der Pias* Laboratory of Organic Chemistry, Agricultural University ... Heterocyclic Chem., 19, 1285 (1982 ... 3] HC van der Pias, VN Charushin and A. van Veldhuizen, J. Org ...