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Electronic spectrum of thiophen and some deuterated thiophens
Journal of the Chemical Society, Faraday Transactions 2, 1972The electronic absorption spectra of thiophen and of some deuterated thiophens have been studied in the range 2500–1400 A. Three electronic transitions, with origins at 41 595, 48 330 and 53 270 cm–1 in C4H4S and two Rydberg series leading to the limit 71 570 cm–1 were analyzed.
G. Di Lonardo +3 more
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2022
Thiophenes are sulfur-containing aromatic heterocycles, the simple derivatives of which are stable liquids. Unlike their nitrogen-containing analogues, thiophene-containing compounds rarely occur in plants and have no role in the metabolism of animals.
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Thiophenes are sulfur-containing aromatic heterocycles, the simple derivatives of which are stable liquids. Unlike their nitrogen-containing analogues, thiophene-containing compounds rarely occur in plants and have no role in the metabolism of animals.
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Organic Letters, 2013
Three convergent routes to thiophenes are described, hinging on the radical addition of α-xanthyl ketones to ethyl vinyl sulfide or to vinyl pivalate. The latter route ultimately proved to be the most versatile and efficient (61-94%).
Jullien, Hélène +3 more
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Three convergent routes to thiophenes are described, hinging on the radical addition of α-xanthyl ketones to ethyl vinyl sulfide or to vinyl pivalate. The latter route ultimately proved to be the most versatile and efficient (61-94%).
Jullien, Hélène +3 more
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Radiation-Driven Destruction of Thiophene and Methyl-Substituted Thiophenes
AstrobiologyThiophene and two derivatives (2-methylthiophene and 3-methylthiophene) have been detected on the surface of Mars with the Sample Analysis at Mars instrument suite onboard NASA's Curiosity rover. Thiophene could serve as a secondary chemical biosignature since the secondary biosynthesis of thiophene is considered an important production pathway ...
Patrick D. Tribbett +4 more
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Bis(ferrocenylsilyl)thiophenes and ferrocenylene(silylene)thiophene oligomers
Polyhedron, 2000Abstract The reaction between 1,1′-dilithioferrocene and 2,5-bis(chlorodimethylsilyl)thiophene ( I ), leads to a series of cyclic oligomers of basic formulation [Fc-SiMe 2 -TH-SiMe 2 ] n ( II ); Fc=(η 5 -C 5 H 4 ) 2 Fe, TH=C 4 H 2 S. The material n =2, IIa , has been completely characterized by spectroscopic and single crystal X-ray diffraction.
Keith H. Pannell +3 more
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Chapter 5 Thiophenes and benzo[b]thiophenes
2007Publisher Summary Thiophene is a useful template for four-carbon homologation via reduction, as well as a bioisostere of the benzene ring and other heterocycles in medicinal chemistry. Thiophene is a π-electron-excessive heterocycle. It favors electrophilic substitution, which, similar to metalation, takes place preferably at the α-positions due to
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Fresenius' Zeitschrift f�r Analytische Chemie, 1955
H. Freytag, Irmgard Schweitzer, J. Rasch
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H. Freytag, Irmgard Schweitzer, J. Rasch
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Supramolecular Thiophene Nanosheets
Angewandte Chemie, 2013Zheng, Y. +8 more
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