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Synthesis and photochromic reactivity of a new class of photochromic diarylethene dimer-containing dithieno[3,2-b:2′3′-d]thiophene

✍ Scribed by Hongke Wang; Wei Xu; Daoben Zhu


Book ID
119375702
Publisher
Elsevier Science
Year
2012
Tongue
French
Weight
469 KB
Volume
68
Category
Article
ISSN
0040-4020

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A convenient and improved synthesis of d
✍ Fredrik Allared; Jonas Hellberg; Tommi Remonen 📂 Article 📅 2002 🏛 Elsevier Science 🌐 French ⚖ 52 KB

An improved synthesis of dithieno[3,2-b:2%,3%-d]thiophene 1 is presented. By starting from 2,3-dibromothiophene 2 the total yield was improved from 35 to 58%. We also describe a more convenient synthesis of one of the reagents, benzenesulfonic acid thioanhydride 3.