反应详情

Obtained using the procedure described in section c of Example 2, starting with 3.0 g (0.025 mole) of 3-amino-2-pyrazinecarbonitrile and 3.8 g (0.025 mole) of 2-phenoxyacetamidine [prepared according to C. Djerassi and C. R. Scholz, J. Am. Chem. Soc. 1947, 69, 1688] in 100 ml of absolute ethanol. Refluxing time: 4 hours. Yld: 5.4 g (85%), m.p. 202°-204° C. (ethanol).

1. customObtained
2. temperatureRefluxing time
3. custom4 hours