A novel synthesis of benzo[b]thiophene was written by Liao, Zutai;Lv, Xuehao;Tao, Ming. And the article was included in Research on Chemical Intermediates in 2013.Reference of 55219-11-9 This article mentions the following:
A convenient method of preparation of benzo[b]thiophene by the using 2-chlorobenzaldehyde and 2-mercaptoacetonitrile as starting materials was reported. The process comprises two steps, neither of which was reported previously. The reactions in this work are clean and efficient. In the experiment, the researchers used many compounds, for example, Benzo[b]thiophene-2-carbonitrile (cas: 55219-11-9Reference of 55219-11-9).
Benzo[b]thiophene-2-carbonitrile (cas: 55219-11-9) belongs to benzothiophene derivatives. Benzothiophene is relatively a stable molecule. The core structure is a part of various pharmaceutical substances and natural products. Due to its aromaticity, thiophenes do not exhibit the same properties as conventional thioethers.Reference of 55219-11-9
Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem