Synthesis, bioactivities, and X-ray structure analysis of 2-cyano-5-methylpyrazolo[1,5-a]pyrimidine
✍ Scribed by Ming Li; Shuwen Wang; Lirong Wen; Xiuli Zhang; Ziqin Ke
- Publisher
- Springer
- Year
- 2005
- Tongue
- English
- Weight
- 72 KB
- Volume
- 35
- Category
- Article
- ISSN
- 1572-8854
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## Abstract In an attempt to discover novel compounds with high herbicidal activity and low toxicity, a series of novel 1,2,4‐triazolo[1,5‐a]pyrimidine derivatives, α‐(5,7‐dimethyl‐1,2,4‐triazolo[1,5‐a]pyrimidine‐2‐thio)acetamides **3** and α‐(5,7‐dimethyl‐1,2,4‐triazolo[1,5‐a]pyrimidine‐2‐sul‐fony
## Abstract A series of 2‐[mercapto(cyano)methylene]‐1,2,3,4‐tetrahydroquinazolin‐4‐ones and 2‐amino‐4‐methylpyrazolo[1,5‐a]quinazolin‐5(4__H__)‐one were prepared from 2‐cyanomethylquinazolin‐4(3__H__)‐ones __via__ α‐bromo derivatives 4 and amide oxime 8, respectively. The new compounds have been c