反应详情

Obtained using the procedure described in section c of Example 2, starting with 8.8 g (0.073 mole) of 3-amino-2-pyrazinecarbonitrile and 13.0 g (0.11 mole) of 2-isopropoxyacetamidine in 295 ml of absolute ethanol. Refluxing time: 4 hours. Yld: 4.5 g (28%), m.p. 139°-141° C. (ethyl acetate).

1. customObtained
2. temperatureRefluxing time
3. custom4 hours