1 edition of Phosphoric esters and related compounds found in the catalog.
Phosphoric esters and related compounds
|Statement||organised by G.W. Kenner and D.M. Brown.|
|Series||Chemical Society special publications -- no.8|
|Contributions||Kenner, G. W., Brown, D. M., Chemical Society.|
|The Physical Object|
|Number of Pages||183|
Model studies on the hydrolysis of a cyclic ester showing high reactivity toward proteolytic enzymes biological implications. Bioorganic Chemistry , 1 (), The simplest member of this class is Phosphoric acid proper, also called orthophosphoric or monophosphoric acid, H 3 PO 4 (or OP(OH) 3), a triprotic forms orthophosphate salt and esters, commonly called phosphates.; The smallest compounds of this class with two or more phosphorus atoms are called "oligophosphoric acids", and the larger ones, with linear –P–O– backbones, are.
ester, any one of a group of organic compounds with general formula RCO 2 R′ (where R and R′ are alkyl groups or aryl groups) that are formed by the reaction between an alcohol and an acid. For example, when ethanol and acetic acid react, ethyl acetate (an ester) . Phosphate esters, thiophosphate esters and metal thiophosphates have been used as lubricant additives for over 50 years. Recently, phosphorus‐containing ionic liquids have emerged as a new class of lubricant additives. While the use of phosphorus compounds has been extensive, a detailed knowledge of how they work has been a much more recent development.
Pentavalent phosphorus forms two main series of organic compounds with active hydrogen. These are the organic phosphonates R-P(=O)(OH) 2 and organic phosphates R-O-P(=O)(OH) 2 where R can be alkyl or aryl. Phosphonic and phosphoric acids are relatively strong acids (for methyl phosphate, pK a = ). The derivatization of these compounds is. The isolation and purification of phosphoric esters are usually accom- plished by the fractional precipitation of their metallic salts. This method has been extremely useful and has led to the isolation of a large number of biologically important phosphorus compounds. However, some types.
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Just as carboxylic acids do, inorganic acids such as nitric acid (HNO 3), sulfuric acid (H 2 SO 4), and phosphoric acid (H 3 PO 4) also form esters of phosphoric acid are especially important in biochemistry.
A phosphoric acid molecule can form a monoalkyl, a dialkyl, or a trialkyl ester by reaction with one, two, or three molecules of an alcohol. This is “Esters of Phosphoric Acid”, section from the book Introduction to Chemistry: General, Organic, and Biological (v. For details on it (including licensing), click here.
This book is licensed under a Creative Commons by-nc-sa license. Phosphoric esters and related compounds; report of a symposium held at the Chemical Society anniversary meeting, Cambridge, on April th, Author: George Wallace Kenner ; Chemical Society (Great Britain).
Cleavage of Industrial Phosphoric Acid Triesters. Cleavage of Phosphonates. Cleavage of Phosphorothioates and Phosphonothioates. Hydrolysis of Phosphoramidates and P‐Halide Compounds. Hydrolysis of Sulfuric Acid Esters and Related Compounds Introduction. Sulfuric Acid Esters. Related Compounds.
Hydrolysis of carboxylic and phosphoric esters is also a slow process at neutral pH, and is catalyzed by acids and bases by mechanisms similar to those involved in amide and peptide hydrolysis. Metal ions are also good catalysts of both carboxylic and phosphoric ester hydrolysis, typically with rate increases much higher than those observed for.
In the classical work of Westheimer 〈68ACR70〉 the important role of phosphoranes as intermediates or transition states and the possibility of steric rearrangements are discussed in an excellent review. Experimental data show that the cyclic phosphoric ester 2-methoxyoxo-1,3,2-dioxaphospholane () hydrolyzes under basic or acid conditions 10 5 to 10 8 times faster than its open chain.
Book: The Basics of GOB Chemistry (Ball et al.) Esters of phosphoric acid are of the utmost importance to life. Names of Esters. Although esters are covalent compounds and salts are ionic, esters are named in a manner similar to that used for naming salts.
The group name of the alkyl or aryl portion is given first and is followed by the. Phosphate esters are pervasive in the chemistry of life. As dialkyl esters, they form phospholipid bilayers that serve as the walls of our cells and as monoalkyl esters (ADP, ATP, sugar phosphates), serve as critical intermediates in vital metabolic processes.
In each case, the structures are appropriate to. In chemistry, an ester is a chemical compound derived from an acid (organic or inorganic) in which at least one –OH (hydroxyl) group is replaced by an –O–alkyl group.
Usually, esters are derived from a carboxylic acid and an alcohol. Glycerides, which are fatty acid esters of glycerol, are important esters in biology, being one of the main classes of lipids, and making up the bulk of.
Phosphate esters have the general structure P(=O)(OR) 3 feature P(V). Such species are of technological importance as flame retardant agents, and g a P−C bond, these compounds are in the technical sense not organophosphorus compounds but esters of phosphoric. Just as carboxylic acids do, inorganic acids such as nitric acid (HNO 3), sulfuric acid (H 2 SO 4), and phosphoric acid (H 3 PO 4) also form esters of phosphoric acid are especially important in biochemistry.
A phosphoric acid molecule can form a monoalkyl, a dialkyl, or a trialkyl ester by reaction with one, two, or three molecules of an alcohol.
OCLC Number: Description: ix, pages illustrations: Contents: Lecture I. The occurrence of phosphoric esters in natureLecture II. Calcification of catilage and boneLecture III. Phosphorochloridates and phosphorodichloridates have been used for the preparation of mixed tertiary phosphoric esters of type (RO) m PO(OR’) n (m = 1, n = 2, or m = 2, n = 1) in a very wide variety.
9 Reaction of phosphorus oxychloride and 1 or 2 equiv. of alcohols followed by hydrolysis forms phosphomonoesters or phosphodiesters. The fully deprotonated conjugate base of phosphoric acid is called a phosphate ion, or inorganic phosphate (often abbreviated '\(P_i\)').
When two phosphate groups are linked to each other, the linkage itself is referred to as a 'phosphate anhydride', and the compound is called 'inorganic pyrophosphate' (often abbreviated \(PP_i\)).
Phosphorus Compounds. Phosphorus compounds containing aromatic groups can be detected on thin-layer chromatography (TLC) plates often by illumination with ultraviolet (UV) light of wavelength nm. From: Best Synthetic Methods, Related terms: Amine; Ester; Nitrogen; Nitrogen Compounds; Olefin; Oxide; Phosphoric Acid; Phosphorus.
A.I. Al-Mosawi, in Lightweight Composite Structures in Transport, Phosphorus-containing flame retardants. This category generally includes phosphate esters, ammonium orthophosphates, ammonium polyphosphates, and red retardants are oxidized during combustion to phosphorus oxide, which turns into a phosphoric acid on its interaction with water.
(Prom the Department of Biological Chemistry, Harvard Medical School, Boston) (Received for publication, J ) This paper reports the synthesis of esters of phosphoric acid related to the naturally occurring phosphatides.
Aminoethyl- phosphoric acid resulted from the reaction of ethylenimine with phosphoric acid. The applicability of. PHYTIN AND PHOSPHORIC ACID ESTERS OF INOSITE. BY R. ANDERSON. (From the Chemical Laboratory of the New York Agricultural Experiment Station, Geneva, N.
Y.) (Received for publication, April 2, ) In continuation of the physiological investigation concerning the metabolism of the organic-phosphorus compound known as. A phosphoric acid, in the general sense, is a phosphorus oxoacid in which each phosphorus atom is in the oxidation state +5, and is bonded to four oxygen atoms, one of them through a double bond, arranged as the corners of a or more of these PO 4 tetrahedra may be connected by shared single-bonded oxygens, forming linear or branched chains, cycles, or more complex structures.
Phosphoric acid, dodecyl diphenyl ester. Alkyl diphenyl phosphate. dodecyldiphenyl phosphate. dodecyl diphenyl phosphate. : The Significance of Phosphoric Esters in Metabolism: Christian A. Herter Lectureship on Pathological Chemistry, New York University (): Robison, Robert: BooksAuthor: Robert Robison.Compound phosphoric acid, triethyl ester with free spectra: 5 NMR, 4 FTIR, and 1 Raman.USA USA USA USA US A US A US A US A US A US A US A US A US A US A US A US A Authority US United States Prior art keywords group consisting member selected represents phosphoric acid lower Prior art date Legal status (The legal status is .