Expedient Synthesis of Substituted Thieno[3,2-<i>b</i>]thiophenes and Selenopheno[3,2-<i>b</i>]selenophenes Through Cascade Cyclization of Alkynyl Diol Derivatives.

ABSTRACT: Thieno[3,2-b]thiophenes are used as key components in optoelectronic materials, porous hydrogen-storage hosts, organic solar cells, and polymer semiconductors. A step-efficient synthetic protocol was proposed herein for obtaining multisubstituted thieno[3,2-b]thiophene and selenopheno[3,2-b]selenophenes in moderate to good yields via the bisulfur/biselenium cyclization of alkynyl diols with I₂/Na₂S₂O₃ or selenium. Using this strategy, substitution patterns were obtained for backbone modification in functional materials.

SUBMITTER: Feng Y 

PROVIDER: S-EPMC11643606 | biostudies-literature | 2024 Nov

REPOSITORIES: biostudies-literature