Читать книгу Routes to Essential Medicines - Peter J. Harrington - Страница 21

The pyrimidine ring is also formed by reaction of ethyl 3‐aminopyrazole‐4‐carboxylate with formamide. Draw the structures of the retrosynthetic analysis of ethyl 3‐aminopyrazole‐4‐carboxylate. List the pros and cons for both routes and select one route as the preferred route.