Concept: Cyclization and Aryne Chemistry
New 3-Alken(yn)ylsulfanyl-9H-indeno[1,2-e][1,2,4]triazin-9-ones and Their Heterocyclization
Synthesis of new tricyclic heterocycles and their ring-forming reactions with halogens
![New 3-Alken(yn)ylsulfanyl-9H-indeno[1,2-e][1,2,4]triazin-9-ones and Their Heterocyclization](data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSI1NzcwIiBoZWlnaHQ9IjMyODAiIHZpZXdCb3g9IjAgMCA1NzcwIDMyODAiPjxyZWN0IHdpZHRoPSIxMDAlIiBoZWlnaHQ9IjEwMCUiIHN0eWxlPSJmaWxsOiNjZmQ0ZGI7ZmlsbC1vcGFjaXR5OiAwLjE7Ii8+PC9zdmc+)
Synthesis of new tricyclic heterocycles and their ring-forming reactions with halogens
![New 3-Alken(yn)ylsulfanyl-9H-indeno[1,2-e][1,2,4]triazin-9-ones and Their Heterocyclization](https://focalinterest.com/wp-content/uploads/2026/04/pexels-18210705.jpg)