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

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

Thieno[3,2-<i>b</i>]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-<i>b</i>]th...

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Bibliographic Details
Main Authors: Yingqi Feng, Xuelin Zhang, Ziqing He, Miaoshan Zhao, Lu Chen, Yibiao Li, Xiai Luo
Format: Article
Language:English
Published: MDPI AG 2024-11-01
Series:Molecules
Subjects:
thienothiophene
cyclization
sulfur radical
step-efficiency
dehydration
Online Access:https://www.mdpi.com/1420-3049/29/23/5507
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Summary:Thieno[3,2-<i>b</i>]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-<i>b</i>]thiophene and selenopheno[3,2-<i>b</i>]selenophenes in moderate to good yields via the bisulfur/biselenium cyclization of alkynyl diols with I<sub>2</sub>/Na<sub>2</sub>S<sub>2</sub>O<sub>3</sub> or selenium. Using this strategy, substitution patterns were obtained for backbone modification in functional materials.
ISSN:1420-3049

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