Pyrazolo[1,5-a]pyrimidines are fused N-heterocyclic systems of a pyrazole. They are considered as a key structural motif in many vital applications, such as medicinal, pharmaceuticals, pesticides, dyes and pigments. Their synthetic routes have escalated dramatically in the last decades. The current review is a recent synthetic survey of pyrazolo[ 1,5-a]pyrimidines and their applications until recently.

中文翻译：

---

吡唑并[1,5-a]嘧啶类化合物的合成与应用研究

吡唑并[1,5-a]嘧啶是吡唑的稠合N-杂环系统。它们被认为是许多重要应用中的关键结构图案，例如医药，制药，农药，染料和颜料。在过去的几十年中，他们的合成路线急剧升级。本文是对吡唑并[1，5-a]嘧啶及其应用的最新综述。