in diethyl ether byproducts: CO2; anhyd. ether condensed onto pure H2SO4 at -80 °C, H2SO4 dissolved by warming; Onto mixt. HNCO is condensed at -80 °C, mixt. allowed to warm slowly to -60 to -50 °C, evoln. of CO2. Explosion at too high concns. or warming rapidly;;
参考文献
Liebigs Annalen der Chemie, , vol. 535, p. 267 - 284
