Abstract 4-(2-Hydroxyaryl)-1, 2, 3-thiadiazoles treated with bases decompose with nitrogen liberation and the formation of benzo [b] furan-2-thiolates. On acidifying the thiolates benzo [b] furan-2-thiols were obtained. 4-(4-and-5-Benzyloxy-2-hydroxyphenyl)-1, 2, 3-thiadiazoles formed analogously the corresponding benzo [b] furan-2-thiolates whose acidifying afforded polymeric compounds.
![ethyl N-[[(1Z)-1-(6-oxo-1-cyclohexa-2,4-dienylidene)ethyl]amino]carbamate Structure](https://image.chemsrc.com/caspic/450/59834-04-7.png)