Terphenyl

The purpose of the fee is to recover costs associated with the development of data collections included in such sites. Your institution may already terphenyl a subscriber, terphenyl.

Terphenyls are a group of closely related aromatic hydrocarbons. Also known as diphenylbenzenes or triphenyls , they consist of a central benzene ring substituted with two phenyl groups. There are three substitution patterns : ortho -terphenyl, meta -terphenyl , and para -terphenyl. Commercial grade terphenyl is generally a mixture of the three isomers. This mixture is used in the production of polychlorinated terphenyls , which were formerly used as heat storage and transfer agents.

Terphenyl

This also led to the first alternate form of meta-terphenyl synthesis, which involved passing gaseous benzene and toluene through a hot glass tube. By the s, focus had shifted to experimenting with the reactivity of meta-terphenyl and its potential use as a ligand. The first verified modified version of meta-terphenyl was created in by Arthur Wardner and Alexander Lowy and led to the creation of nitro-substituted meta-terphenyls as well as amino-meta-terphenyls from the oxidation of the nitro-substituted compounds. Breadsher and I. Swerlick publishing a review of all known reactions that meta-terphenyl could undergo. Ames also wrote an article detailing not only reactions of meta-terphenyls, but also covering all the different experimental methods to obtain meta-terphenyl known at the time. During this time, the method of producing meta-terphenyl had remained the same. While people did experiment with other ways to obtain the compound, for the most part the method of heating benzene in a glass tube remained the primary method. In , however, G. Woods and Irwin Tucker put forth an alternative method. Instead of heating benzene, they found that a combination of dihydroresocinol and two equivalents of phenyllithium would create unsymmetrical meta-terphenyl molecules. This method would remain the most popular form of making meta-terphenyls until the end of the 20 th century. It was during this time that it was discovered that meta-terphenyls occurred in nature. As the demand for meta-terphenyl and its derivatives grew through the latter half of the 20 th century, it became necessary to increase the yield of reactions producing meta-terphenyls as well as have the ability to uniquely create symmetric and unsymmetric meta-terphenyls to investigate their reactivity as well utilize their increased steric control.

Inorganic Chemistry. Solubility in water. Article Talk.

.

Federal government websites often end in. The site is secure. The central ring of p -Terphenyls is usually modified into more oxidized forms, e. In some cases, additional ring systems were observed on the terphenyl-type core structure or between two benzene moieties. In this review, we will mainly summarize the structural diversity and biological activity of naturally occurring p -Terphenyls referring to the research works published before. The online version contains supplementary material available at Terphenyls are a large class of aromatic compounds consisting of a chain of three benzene rings and most of them belong to p -terphenyls. These compounds are mainly produced by fungi and a small number of Actinomycetes. Chemical research on p -terphenyls could be traced back to Liu Since then, over p -terphenyls have been isolated and the number is still increasing Li et al.

Terphenyl

The purpose of the fee is to recover costs associated with the development of data collections included in such sites. Your institution may already be a subscriber. Follow the links above to find out more about the data in these sites and their terms of usage. Data compilation copyright by the U. Secretary of Commerce on behalf of the U.

Printable people

Hazard statements. View spectrum image in SVG format. The second involved a dichloro-substituted benzene and butyl lithium followed by two equivalents of the Grignard reagents mentioned above. Leskin, Natalia A. Arthur; Lowy, Alexander Chemical Reviews. GHS labelling :. EC Number. Goncharova, Axlexander N. This mixture is used in the production of polychlorinated terphenyls , which were formerly used as heat storage and transfer agents. Refractive index n D.

This also led to the first alternate form of meta-terphenyl synthesis, which involved passing gaseous benzene and toluene through a hot glass tube. By the s, focus had shifted to experimenting with the reactivity of meta-terphenyl and its potential use as a ligand.

Chemical Reviews. Solubility in water. While this method does not have the highest yield, it is much quicker being able to be completed within an hour. Another relevant field of study where meta-terphenyls have shown significant use is organometallics. Due to its composition and shape, meta-terphenyl can be used as the basis for the formation of synthetic proteins that can bind to carbohydrates, lectins. ISSN X. This method continues to remain very popular in terms of the creation of symmetrical meta-terphenyl compounds, but that has not stopped attempts to quicken synthesis, increase yield, and create more sterically bulky m-terphenyls. Woods and Irwin Tucker put forth an alternative method. Breadsher and I. Chemical Reviews. Meta-terphenyls have a variety of uses in fields of chemistry. Select a region with data to zoom. Read Edit View history. Toggle limited content width.