[CH:1]([N:4]=[C:5]=[N:6][C:7]1[CH:8]=[N:9][CH:10]=[CH:11][CH:12]=1)([CH3:3])[CH3:2].C([N:17]=[C:18]=[N:19]C1C=NC=CC=1)(C)(C)C>>[C:18]([N:19]=[C:5]([NH:6][C:7]1[CH:8]=[N:9][CH:10]=[CH:11][CH:12]=1)[NH:4][CH:1]([CH3:3])[CH3:2])#[N:17]By following the procedure of Example 1, but substituting N-isopropyl-N'-3-pyridylcarbodiimide for the N-tert-butyl-N'-3-pyridylcarbodiimide, the N"-cyano-N-isopropyl-N'-3-pyridylguanidine was obtained with a melting point of 154.5°-155.0° C. Warning: Strongly exothermic reaction was observed in this case.
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