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- W2235636700 abstract "This chapter discusses condensed systems of heteroaromatic five-membered rings—thienothiophenes, dithienothiophenes, selenophenoselenophenes, and selenophenothiophenes. The chapter describes the preparation of the isomeric thienothiophenes and related systems. There are two main routes to the synthesis of isomeric thienothiophenes: cyclization of various aliphatic substances and cyclization of derivatives of the thiophene series. The molecular structure and physical properties are also described. X -ray structural analysis and quantum-mechanical calculations suggests that thieno[3,2-b]thiophene possesses a ground state intermediate form between the extremes with completely localized double bonds and that with complete delocalization of n-electrons. The chapter also focuses on reactivity of thienothiophenes. This includes isotope exchange of deuterated thienothiophenes: quantum-chemical reactivity calculations and chemical conversions of the isomeric thienothiophenes. Furthermore, chemical reactions and possible applications of the isomeric thienothiophenes have been discussed." @default.
- W2235636700 created "2016-06-24" @default.
- W2235636700 creator A5002120057 @default.
- W2235636700 creator A5055769774 @default.
- W2235636700 date "1976-01-01" @default.
- W2235636700 modified "2023-10-10" @default.
- W2235636700 title "The Chemistry of Thienothiophenes and Related Systems" @default.
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