from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A colorless liquid, C4H4S, used as a solvent.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Any of a class of aromatic heterocyclic compounds containing a ring of four carbon atoms and an sulphur atom; especially the simplest one, C4H4S.
from the GNU version of the Collaborative International Dictionary of English
- n. A sulphur hydrocarbon, C4H4S, analogous to furfuran and benzene, and acting as the base of a large number of substances which closely resemble the corresponding aromatic derivatives.
from The Century Dictionary and Cyclopedia
- n. A compound, C4H4S, related to benzene, and forming a large number of derivatives analogous to those of benzin.
Benzene from which every trace of thiophene has not been eliminated cannot be transformed into cyclohexane.
To a small portion of this solution add slight excess of sodium carbonate, evaporate to dryness on the water-bath, dissolve in 5-10 c.c. pure sulphuric acid, add 2 drops saturated copper sulphate solution, place in a test-tube and heat in a boiling water-bath for 2 minutes, cool, add 2 or 3 drops of the alcoholic thiophene and warm gently.
Alcoholic thiophene solution (0.15 c.c. in 100 c.c.).
This space is nearly filled with benzole (boiling-point 80°C.; pure benzole, free from thiophene must be employed for the purpose, otherwise the boiling-point gradually and perceptibly rises in the course of time), and to the tubulure is fitted a long glass tube, some 2 metres long and about 0.75 cm. diameter, serving as a condensing tube (a tube half this length if provided with a condensing bulb at the centre will be equally efficient).
In the study, frozen brain sections from people who died with Alzheimer's were stained using two LCPs/LCOs: pentamer formyl thiophene acetic acid (pFTAA) and polythiophene acetic acid (PTAA).
One of them being for instance cut ends of thiophene sulfone that I also highlighted here in red.
The reader can therefore use this book to rapidly review and select the best methods of performing a synthetic conversion to create or modify a specifically substituted thiophene.
It contains a valuable distillation and critical evaluation of the Best Synthetic Methods for the formation and reaction of thiophenes (five membered heterocycles containing a ring sulfur) or polymers containing a thiophene functionality (thienyls).
Although this book contains many references to the original literature, the large number of experimental recipes enables the user to prepare a thiophene derivative without access to the original literature.
These features make the handbook especially useful for physicists working in material sciences and organic / pharmaceutical chemists, who rapidly want to find out the availability of (or how to make) a specific thiophene.