1984 年 104 巻 2 号 p. 127-133
The reaction of 2-bis (methylthio) methylene-1, 3-indadione with various active methylene compounds gave the corresponding displacement products of one methylthio group, some heterocyclic compounds (indeno [1, 2-b] pyridine, indeno [1, 2-b] pyran-2-one) and 9-fluorenone derivative in good results.