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Electrophilic aromatic substitution. Part 32. Partial rate factors for detritiation of dithieno[2,3-b:3?,2?-d]thiophen, dithieno[3,2-b:2?,3?-d]-thiophen, and dithieno[2,3-b:2?,3?-d]thiophen

โœ Scribed by Archer, William J.; Taylor, Roger


Book ID
120921767
Publisher
Royal Society of Chemistry
Year
1982
Tongue
English
Weight
547 KB
Volume
3
Category
Article
ISSN
1472-779X

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A convenient and improved synthesis of d
โœ Fredrik Allared; Jonas Hellberg; Tommi Remonen ๐Ÿ“‚ Article ๐Ÿ“… 2002 ๐Ÿ› Elsevier Science ๐ŸŒ French โš– 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.